Zimbra Zimbra builds Email and Collaboration Tools
Products by Zimbra Sorted by Most Security Vulnerabilities since 2018
Known Exploited Zimbra Vulnerabilities
The following Zimbra vulnerabilities have been marked by CISA as Known to be Exploited by threat actors.
| Title | Description | Added |
|---|---|---|
| Zimbra Collaboration (ZCS) Cross-Site Scripting (XSS) Vulnerability | Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability impacting the confidentiality and integrity of data. CVE-2023-37580 | July 27, 2023 |
| Zimbra Collaboration (ZCS) Cross-Site Scripting (XSS) Vulnerability | Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability by allowing an endpoint URL to accept parameters without sanitizing. CVE-2022-27926 | April 3, 2023 |
| Zimbra Collaboration (ZCS) Arbitrary File Upload Vulnerability | Zimbra Collaboration (ZCS) allows an attacker to upload arbitrary files using cpio package to gain incorrect access to any other user accounts. CVE-2022-41352 | October 20, 2022 |
| Zimbra Collaboration (ZCS) Arbitrary File Upload Vulnerability | Zimbra Collaboration (ZCS) contains flaw in the mboximport functionality, allowing an authenticated attacker to upload arbitrary files to perform remote code execution. This vulnerability was chained with CVE-2022-37042 which allows for unauthenticated remote code execution. CVE-2022-27925 | August 11, 2022 |
| Zimbra Collaboration (ZCS) Authentication Bypass Vulnerability | Zimbra Collaboration (ZCS) contains an authentication bypass vulnerability in MailboxImportServlet. This vulnerability was chained with CVE-2022-27925 which allows for unauthenticated remote code execution. CVE-2022-37042 | August 11, 2022 |
| Zimbra Collaboration (ZCS) Command Injection Vulnerability | Zimbra Collaboration (ZCS) allows an attacker to inject memcache commands into a targeted instance which causes an overwrite of arbitrary cached entries. CVE-2022-27924 | August 4, 2022 |
| Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability | Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that might allow remote attackers to inject arbitrary web script or HTML. CVE-2018-6882 | April 19, 2022 |
| Zimbra Webmail Cross-Site Scripting Vulnerability | Zimbra webmail clients running versions 8.8.15 P29 & P30 contain a XSS vulnerability that would allow attackers to steal session cookie files. CVE-2022-24682 | February 25, 2022 |
By the Year
In 2024 there have been 1 vulnerability in Zimbra with an average score of 4.7 out of ten. Last year Zimbra had 14 security vulnerabilities published. Right now, Zimbra is on track to have less security vulnerabilities in 2024 than it did last year. Last year, the average CVE base score was greater by 2.65
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2024 | 1 | 4.70 |
| 2023 | 14 | 7.35 |
| 2022 | 17 | 7.22 |
| 2021 | 4 | 6.85 |
| 2020 | 8 | 6.04 |
| 2019 | 1 | 7.50 |
| 2018 | 3 | 7.13 |
It may take a day or so for new Zimbra vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Zimbra Security Vulnerabilities
A vulnerability has been found in Zimbra zm-ajax up to 8.8.1 and classified as problematic
CVE-2017-20188
4.7 - Medium
- January 02, 2024
A vulnerability has been found in Zimbra zm-ajax up to 8.8.1 and classified as problematic. Affected by this vulnerability is the function XFormItem.prototype.setError of the file WebRoot/js/ajax/dwt/xforms/XFormItem.js. The manipulation of the argument message leads to cross site scripting. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. Upgrading to version 8.8.2 is able to address this issue. The identifier of the patch is 8d039d6efe80780adc40c6f670c06d21de272105. It is recommended to upgrade the affected component. The identifier VDB-249421 was assigned to this vulnerability.
XSS
An issue was discovered in Zimbra Collaboration (ZCS) before 10.0.4
CVE-2023-43102
6.1 - Medium
- December 07, 2023
An issue was discovered in Zimbra Collaboration (ZCS) before 10.0.4. An XSS issue can be exploited to access the mailbox of an authenticated user. This is also fixed in 8.8.15 Patch 43 and 9.0.0 Patch 36.
XSS
An XSS issue was discovered in a web endpoint in Zimbra Collaboration (ZCS) before 10.0.4 via an unsanitized parameter
CVE-2023-43103
6.1 - Medium
- December 07, 2023
An XSS issue was discovered in a web endpoint in Zimbra Collaboration (ZCS) before 10.0.4 via an unsanitized parameter. This is also fixed in 8.8.15 Patch 43 and 9.0.0 Patch 36.
XSS
An issue was discovered in Zimbra Collaboration (ZCS) before 10.0.3
CVE-2023-41106
7.5 - High
- December 07, 2023
An issue was discovered in Zimbra Collaboration (ZCS) before 10.0.3. An attacker can gain access to a Zimbra account. This is also fixed in 9.0.0 Patch 35 and 8.8.15 Patch 42.
Zimbra Collaboration (ZCS) 8 before 8.8.15 Patch 41
CVE-2023-37580
6.1 - Medium
- July 31, 2023
Zimbra Collaboration (ZCS) 8 before 8.8.15 Patch 41 allows XSS in the Zimbra Classic Web Client.
XSS
In Zimbra Collaboration (ZCS) 8 before 8.8.15 Patch 41, 9 before 9.0.0 Patch 34, and 10 before 10.0.2, internal JSP and XML files
CVE-2023-38750
7.5 - High
- July 31, 2023
In Zimbra Collaboration (ZCS) 8 before 8.8.15 Patch 41, 9 before 9.0.0 Patch 34, and 10 before 10.0.2, internal JSP and XML files can be exposed.
An issue in Zimbra Collaboration (ZCS) v.8.8.15 and v.9.0
CVE-2023-29381
9.8 - Critical
- July 06, 2023
An issue in Zimbra Collaboration (ZCS) v.8.8.15 and v.9.0 allows a remote attacker to escalate privileges and obtain sensitive information via the password and 2FA parameters.
An issue in Zimbra Collaboration ZCS v.8.8.15 and v.9.0
CVE-2023-29382
9.8 - Critical
- July 06, 2023
An issue in Zimbra Collaboration ZCS v.8.8.15 and v.9.0 allows an attacker to execute arbitrary code via the sfdc_preauth.jsp component.
Cross Site Scripting vulnerability in Zimbra ZCS v.8.8.15
CVE-2023-34192
9 - Critical
- July 06, 2023
Cross Site Scripting vulnerability in Zimbra ZCS v.8.8.15 allows a remote authenticated attacker to execute arbitrary code via a crafted script to the /h/autoSaveDraft function.
XSS
File Upload vulnerability in Zimbra ZCS 8.8.15
CVE-2023-34193
8.8 - High
- July 06, 2023
File Upload vulnerability in Zimbra ZCS 8.8.15 allows an authenticated privileged user to execute arbitrary code and obtain sensitive information via the ClientUploader function.
Unrestricted File Upload
An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 8.8.15
CVE-2023-24031
6.1 - Medium
- June 15, 2023
An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 8.8.15. XSS can occur, via one of attributes of the webmail /h/ endpoint, to execute arbitrary JavaScript code, leading to information disclosure.
XSS
In Zimbra Collaboration Suite through 9.0 and 8.8.15, an attacker (who has initial user access to a Zimbra server instance)
CVE-2023-24032
7.8 - High
- June 15, 2023
In Zimbra Collaboration Suite through 9.0 and 8.8.15, an attacker (who has initial user access to a Zimbra server instance) can execute commands as root by passing one of JVM arguments, leading to local privilege escalation (LPE).
Command Injection
An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0 and 8.8.15
CVE-2023-24030
6.1 - Medium
- June 15, 2023
An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0 and 8.8.15. To exploit the vulnerability, an attacker would need to have obtained a valid zimbra auth token or a valid preauth token. Once the token is obtained, an attacker could redirect a user to any URL if url sanitisation is bypassed in incoming requests. NOTE: this is similar, but not identical, to CVE-2021-34807.
Open Redirect
An issue was discovered in Zimbra Collaboration (ZCS) 9.0
CVE-2022-45911
6.1 - Medium
- January 06, 2023
An issue was discovered in Zimbra Collaboration (ZCS) 9.0. XSS can occur on the Classic UI login page by injecting arbitrary JavaScript code in the username field. This occurs before the user logs into the system, which means that even if the attacker executes arbitrary JavaScript, they will not get any sensitive information.
XSS
An issue was discovered in Zimbra Collaboration (ZCS) 9.0
CVE-2022-45913
6.1 - Medium
- January 06, 2023
An issue was discovered in Zimbra Collaboration (ZCS) 9.0. XSS can occur via one of attributes in webmail URLs to execute arbitrary JavaScript code, leading to information disclosure.
XSS
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0
CVE-2022-45912
7.2 - High
- December 05, 2022
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0. Remote code execution can occur through ClientUploader by an authenticated admin user. An authenticated admin user can upload files through the ClientUploader utility, and traverse to any other directory for remote code execution.
Unrestricted File Upload
In Zimbra Collaboration Suite (ZCS) 8.8.15, /h/search?action=voicemail&action=listen accepts a phone parameter
CVE-2022-41350
6.1 - Medium
- October 12, 2022
In Zimbra Collaboration Suite (ZCS) 8.8.15, /h/search?action=voicemail&action=listen accepts a phone parameter that is vulnerable to Reflected XSS. This allows executing arbitrary JavaScript on the victim's machine.
XSS
In Zimbra Collaboration Suite (ZCS) 8.8.15, at the URL /h/calendar, one
CVE-2022-41351
6.1 - Medium
- October 12, 2022
In Zimbra Collaboration Suite (ZCS) 8.8.15, at the URL /h/calendar, one can trigger XSS by adding JavaScript code to the view parameter and changing the value of the uncheck parameter to a string (instead of default value of 10).
XSS
An issue was discovered in Zimbra Collaboration (ZCS) 9.0
CVE-2022-41348
6.1 - Medium
- October 12, 2022
An issue was discovered in Zimbra Collaboration (ZCS) 9.0. XSS can occur via the onerror attribute of an IMG element, leading to information disclosure.
XSS
In Zimbra Collaboration Suite (ZCS) 8.8.15, the URL at /h/compose accepts an attachUrl parameter that is vulnerable to Reflected XSS
CVE-2022-41349
6.1 - Medium
- October 12, 2022
In Zimbra Collaboration Suite (ZCS) 8.8.15, the URL at /h/compose accepts an attachUrl parameter that is vulnerable to Reflected XSS. This allows executing arbitrary JavaScript on the victim's machine.
XSS
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0
CVE-2022-41352
9.8 - Critical
- September 26, 2022
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0. An attacker can upload arbitrary files through amavis via a cpio loophole (extraction to /opt/zimbra/jetty/webapps/zimbra/public) that can lead to incorrect access to any other user accounts. Zimbra recommends pax over cpio. Also, pax is in the prerequisites of Zimbra on Ubuntu; however, pax is no longer part of a default Red Hat installation after RHEL 6 (or CentOS 6). Once pax is installed, amavis automatically prefers it over cpio.
Directory traversal
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.x and 9.x (e.g
CVE-2022-41347
7.8 - High
- September 26, 2022
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.x and 9.x (e.g., 8.8.15). The Sudo configuration permits the zimbra user to execute the NGINX binary as root with arbitrary parameters. As part of its intended functionality, NGINX can load a user-defined configuration file, which includes plugins in the form of .so files, which also execute as root.
Zimbra's sudo configuration permits the zimbra user to execute the zmslapd binary as root with arbitrary parameters
CVE-2022-37393
7.8 - High
- August 16, 2022
Zimbra's sudo configuration permits the zimbra user to execute the zmslapd binary as root with arbitrary parameters. As part of its intended functionality, zmslapd can load a user-defined configuration file, which includes plugins in the form of .so files, which also execute as root.
An issue was discovered in ProxyServlet.java in the /proxy servlet in Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0
CVE-2022-37041
7.5 - High
- August 12, 2022
An issue was discovered in ProxyServlet.java in the /proxy servlet in Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0. The value of the X-Forwarded-Host header overwrites the value of the Host header in proxied requests. The value of X-Forwarded-Host header is not checked against the whitelist of hosts that ZCS is allowed to proxy to (the zimbraProxyAllowedDomains setting).
XSPA
Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it
CVE-2022-37042
9.8 - Critical
- August 12, 2022
Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it. By bypassing authentication (i.e., not having an authtoken), an attacker can upload arbitrary files to the system, leading to directory traversal and remote code execution. NOTE: this issue exists because of an incomplete fix for CVE-2022-27925.
Directory traversal
An issue was discovered in the webmail component in Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0
CVE-2022-37043
5.7 - Medium
- August 12, 2022
An issue was discovered in the webmail component in Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0. When using preauth, CSRF tokens are not checked on some POST endpoints. Thus, when an authenticated user views an attacker-controlled page, a request will be sent to the application that appears to be intended. The CSRF token is omitted from the request, but the request still succeeds.
Session Riding
In Zimbra Collaboration Suite (ZCS) 8.8.15, the URL at /h/search?action accepts parameters called extra, title, and onload
CVE-2022-37044
6.1 - Medium
- August 12, 2022
In Zimbra Collaboration Suite (ZCS) 8.8.15, the URL at /h/search?action accepts parameters called extra, title, and onload that are partially sanitised and lead to reflected XSS that allows executing arbitrary JavaScript on the victim's machine.
XSS
Zimbra Collaboration Open Source 8.8.15 does not encrypt the initial-login randomly created password (from the "zmprove ca" command)
CVE-2022-32294
9.8 - Critical
- July 11, 2022
Zimbra Collaboration Open Source 8.8.15 does not encrypt the initial-login randomly created password (from the "zmprove ca" command). It is visible in cleartext on port UDP 514 (aka the syslog port). NOTE: a third party reports that this cannot be reproduced.
AuthZ
Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0
CVE-2022-27924
7.5 - High
- April 21, 2022
Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 allows an unauthenticated attacker to inject arbitrary memcache commands into a targeted instance. These memcache commands becomes unescaped, causing an overwrite of arbitrary cached entries.
Injection
Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it
CVE-2022-27925
7.2 - High
- April 21, 2022
Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it. An authenticated user with administrator rights has the ability to upload arbitrary files to the system, leading to directory traversal.
Directory traversal
A reflected cross-site scripting (XSS) vulnerability in the /public/launchNewWindow.jsp component of Zimbra Collaboration (aka ZCS) 9.0
CVE-2022-27926
6.1 - Medium
- April 21, 2022
A reflected cross-site scripting (XSS) vulnerability in the /public/launchNewWindow.jsp component of Zimbra Collaboration (aka ZCS) 9.0 allows unauthenticated attackers to execute arbitrary web script or HTML via request parameters.
An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1)
CVE-2022-24682
6.1 - Medium
- February 09, 2022
An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the wild starting in December 2021. An attacker could place HTML containing executable JavaScript inside element attributes. This markup becomes unescaped, causing arbitrary markup to be injected into the document.
Output Sanitization
An issue was discovered in ProxyServlet.java in the /proxy servlet in Zimbra Collaboration Suite 8.8 before 8.8.15 Patch 23 and 9.x before 9.0.0 Patch 16
CVE-2021-35209
9.8 - Critical
- July 02, 2021
An issue was discovered in ProxyServlet.java in the /proxy servlet in Zimbra Collaboration Suite 8.8 before 8.8.15 Patch 23 and 9.x before 9.0.0 Patch 16. The value of the X-Host header overwrites the value of the Host header in proxied requests. The value of X-Host header is not checked against the whitelist of hosts Zimbra is allowed to proxy to (the zimbraProxyAllowedDomains setting).
XSPA
An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0
CVE-2021-34807
6.1 - Medium
- July 02, 2021
An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0. To exploit the vulnerability, an attacker would need to have obtained a valid zimbra auth token or a valid preauth token. Once the token is obtained, an attacker could redirect a user to any URL via isredirect=1&redirectURL= in conjunction with the token data (e.g., a valid authtoken= value).
Open Redirect
An issue was discovered in ZmMailMsgView.js in the Calendar Invite component in Zimbra Collaboration Suite 8.8.x before 8.8.15 Patch 23
CVE-2021-35208
5.4 - Medium
- July 02, 2021
An issue was discovered in ZmMailMsgView.js in the Calendar Invite component in Zimbra Collaboration Suite 8.8.x before 8.8.15 Patch 23. An attacker could place HTML containing executable JavaScript inside element attributes. This markup becomes unescaped, causing arbitrary markup to be injected into the document.
XSS
An issue was discovered in Zimbra Collaboration Suite 8.8 before 8.8.15 Patch 23 and 9.0 before 9.0.0 Patch 16
CVE-2021-35207
6.1 - Medium
- July 02, 2021
An issue was discovered in Zimbra Collaboration Suite 8.8 before 8.8.15 Patch 23 and 9.0 before 9.0.0 Patch 16. An XSS vulnerability exists in the login component of Zimbra Web Client, in which an attacker can execute arbitrary JavaScript by adding executable JavaScript to the loginErrorCode parameter of the login url.
XSS
In Zimbra Collaboration Suite Network Edition versions < 9.0.0 P10 and 8.8.15 P17, there exists an XXE vulnerability in the saml consumer store extension
CVE-2020-35123
6.5 - Medium
- December 17, 2020
In Zimbra Collaboration Suite Network Edition versions < 9.0.0 P10 and 8.8.15 P17, there exists an XXE vulnerability in the saml consumer store extension, which is vulnerable to XXE attacks. This has been fixed in Zimbra Collaboration Suite Network edition 9.0.0 Patch 10 and 8.8.15 Patch 17.
XXE
A cross-site scripting (XSS) vulnerability in Web Client in Zimbra 9.0
CVE-2020-11737
6.1 - Medium
- May 05, 2020
A cross-site scripting (XSS) vulnerability in Web Client in Zimbra 9.0 allows a remote attacker to craft links in an E-Mail message or calendar invite to execute arbitrary JavaScript. The attack requires an A element containing an href attribute with a "www" substring (including the quotes) followed immediately by a DOM event listener such as onmouseover. This is fixed in 9.0.0 Patch 2.
XSS
cs/service/account/AutoCompleteGal.java in Zimbra zm-mailbox before 8.8.15.p8 allows authenticated users to request any GAL account
CVE-2020-10194
6.5 - Medium
- March 20, 2020
cs/service/account/AutoCompleteGal.java in Zimbra zm-mailbox before 8.8.15.p8 allows authenticated users to request any GAL account. This differs from the intended behavior in which the domain of the authenticated user must match the domain of the galsync account in the request.
AuthZ
In Zimbra Collaboration before 8.8.15 Patch 1
CVE-2019-15313
6.1 - Medium
- January 27, 2020
In Zimbra Collaboration before 8.8.15 Patch 1, there is a non-persistent XSS vulnerability.
XSS
Zimbra Collaboration before 8.8.15 Patch 1 is vulnerable to a non-persistent XSS
CVE-2019-12427
4.8 - Medium
- January 27, 2020
Zimbra Collaboration before 8.8.15 Patch 1 is vulnerable to a non-persistent XSS via the Admin Console.
XSS
Zimbra Collaboration 8.7.x - 8.8.11P2 contains non-persistent XSS.
CVE-2019-8947
6.1 - Medium
- January 27, 2020
Zimbra Collaboration 8.7.x - 8.8.11P2 contains non-persistent XSS.
XSS
Zimbra Collaboration 8.7.x - 8.8.11P2 contains persistent XSS.
CVE-2019-8946
6.1 - Medium
- January 27, 2020
Zimbra Collaboration 8.7.x - 8.8.11P2 contains persistent XSS.
XSS
Zimbra Collaboration 8.7.x - 8.8.11P2 contains persistent XSS.
CVE-2019-8945
6.1 - Medium
- January 27, 2020
Zimbra Collaboration 8.7.x - 8.8.11P2 contains persistent XSS.
XSS
Zimbra Collaboration Suite before 8.6 patch 13, 8.7.x before 8.7.11 patch 10, and 8.8.x before 8.8.10 patch 7 or 8.8.x before 8.8.11 patch 3
CVE-2019-9621
7.5 - High
- April 30, 2019
Zimbra Collaboration Suite before 8.6 patch 13, 8.7.x before 8.7.11 patch 10, and 8.8.x before 8.8.10 patch 7 or 8.8.x before 8.8.11 patch 3 allows SSRF via the ProxyServlet component.
XSPA
Cross-site request forgery (CSRF) vulnerability in the login form in Zimbra Collaboration Suite (aka ZCS) before 8.6.0 Patch 10, 8.7.x before 8.7.11 Patch 2, and 8.8.x before 8.8.8 Patch 1
CVE-2015-7610
8.8 - High
- May 30, 2018
Cross-site request forgery (CSRF) vulnerability in the login form in Zimbra Collaboration Suite (aka ZCS) before 8.6.0 Patch 10, 8.7.x before 8.7.11 Patch 2, and 8.8.x before 8.8.8 Patch 1 allows remote attackers to hijack the authentication of unspecified victims by leveraging failure to use a CSRF token.
Session Riding
Zimbra Web Client (ZWC) in Zimbra Collaboration Suite 8.8 before 8.8.8.Patch4 and 8.7 before 8.7.11.Patch4 has Persistent XSS
CVE-2018-10939
6.1 - Medium
- May 30, 2018
Zimbra Web Client (ZWC) in Zimbra Collaboration Suite 8.8 before 8.8.8.Patch4 and 8.7 before 8.7.11.Patch4 has Persistent XSS via a contact group.
XSS
mailboxd in Zimbra Collaboration Suite 8.8 before 8.8.8; 8.7 before 8.7.11.Patch3; and 8.6 before 8.6.0.Patch10
CVE-2018-10951
6.5 - Medium
- May 10, 2018
mailboxd in Zimbra Collaboration Suite 8.8 before 8.8.8; 8.7 before 8.7.11.Patch3; and 8.6 before 8.6.0.Patch10 allows zimbraSSLPrivateKey read access via a GetServer, GetAllServers, or GetAllActiveServers call in the Admin SOAP API.