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Products by Horde Sorted by Most Security Vulnerabilities since 2018

Horde Groupware18 vulnerabilities

Horde Imp2 vulnerabilities

Horde Dynamic Imp1 vulnerability

Horde Groupware Webmail Edition1 vulnerability

Horde1 vulnerability

Horde Application Framework1 vulnerability

Horde Form1 vulnerability

Horde Imp1 vulnerability

Horde Mime Viewer1 vulnerability

By the Year

In 2026 there have been 0 vulnerabilities in Horde. Last year, in 2025 Horde had 1 security vulnerability published. Right now, Horde is on track to have less security vulnerabilities in 2026 than it did last year.

Year	Vulnerabilities	Average Score
2026	0	0.00
2025	1	0.00
2024	0	0.00
2023	0	0.00
2022	2	6.70
2021	1	6.10
2020	5	0.00
2019	4	7.90
2018	1	0.00

It may take a day or so for new Horde vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.

Recent Horde Security Vulnerabilities

CVE	Date	Vulnerability	Products
CVE-2025-41066	Dec 02, 2025	Horde Groupware v5.2.22 User Enumeration via /imp/attachment.php Horde Groupware v5.2.22 has a user enumeration vulnerability that allows an unauthenticated attacker to determine the existence of valid accounts on the system. To exploit the vulnerability, an HTTP request must be sent to /imp/attachment.php including the parameters id and u. If the specified user exists, the server will return the download of an empty file; if it does not exist, no download will be initiated, which unequivocally reveals the validity of the user.	Groupware
CVE-2022-30287	Jul 28, 2022	Reflection Injection in Horde WebMail 5.2.22 Enables PHP Obj Deserialization Horde Groupware Webmail Edition through 5.2.22 allows a reflection injection attack through which an attacker can instantiate a driver class. This then leads to arbitrary deserialization of PHP objects.	Groupware
CVE-2022-26874	Mar 11, 2022	lib/Horde/Mime/Viewer/Ooo.php in Horde Mime_Viewer before 2.2.4 lib/Horde/Mime/Viewer/Ooo.php in Horde Mime_Viewer before 2.2.4 allows XSS via an OpenOffice document, leading to account takeover in Horde Groupware Webmail Edition. This occurs after XSLT rendering.	Horde Mime Viewer
CVE-2021-26929	Feb 14, 2021	An XSS issue was discovered in Horde Groupware Webmail Edition through 5.2.22 (where the Horde_Text_Filter library before 2.3.7 is used) An XSS issue was discovered in Horde Groupware Webmail Edition through 5.2.22 (where the Horde_Text_Filter library before 2.3.7 is used). The attacker can send a plain text e-mail message, with JavaScript encoded as a link or email that is mishandled by preProcess in Text2html.php, because bespoke use of \x00\x00\x00 and \x01\x01\x01 interferes with XSS defenses.	Groupware
CVE-2020-8034	May 18, 2020	Gollem before 3.0.13, as used in Horde Groupware Webmail Edition 5.2.22 and other products, is affected by a reflected Cross-Site Scripting (XSS) vulnerability Gollem before 3.0.13, as used in Horde Groupware Webmail Edition 5.2.22 and other products, is affected by a reflected Cross-Site Scripting (XSS) vulnerability via the HTTP GET dir parameter in the browser functionality, affecting breadcrumb output. An attacker can obtain access to a victim's webmail account by making them visit a malicious URL.	Groupware
CVE-2020-8035	May 18, 2020	The image view functionality in Horde Groupware Webmail Edition before 5.2.22 is affected by a stored Cross-Site Scripting (XSS) vulnerability The image view functionality in Horde Groupware Webmail Edition before 5.2.22 is affected by a stored Cross-Site Scripting (XSS) vulnerability via an SVG image upload containing a JavaScript payload. An attacker can obtain access to a victim's webmail account by making them visit a malicious URL.	Groupware
CVE-2020-8865	Mar 23, 2020	This vulnerability allows remote attackers to execute local PHP files on affected installations of Horde Groupware Webmail Edition 5.2.22 This vulnerability allows remote attackers to execute local PHP files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within edit.php. When parsing the params[template] parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10469.	Groupware
CVE-2020-8866	Mar 23, 2020	This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22 This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.	Groupware Horde Form
CVE-2020-8518	Feb 17, 2020	Horde Groupware Webmail Edition 5.2.22 Horde Groupware Webmail Edition 5.2.22 allows injection of arbitrary PHP code via CSV data, leading to remote code execution.	Groupware
CVE-2013-6365	Nov 05, 2019	Horde Groupware Web mail 5.1.2 has CSRF with requests to change permissions Horde Groupware Web mail 5.1.2 has CSRF with requests to change permissions	Groupware
CVE-2019-12095	Oct 24, 2019	Horde Trean, as used in Horde Groupware Webmail Edition through 5.2.22 and other products Horde Trean, as used in Horde Groupware Webmail Edition through 5.2.22 and other products, allows CSRF, as demonstrated by the treanBookmarkTags parameter to the trean/ URI on a webmail server. NOTE: treanBookmarkTags could, for example, be a stored XSS payload.	Groupware
CVE-2019-12094	Oct 24, 2019	Horde Groupware Webmail Edition through 5.2.22 Horde Groupware Webmail Edition through 5.2.22 allows XSS via an admin/user.php?form=update_f&user_name= or admin/user.php?form=remove_f&user_name= or admin/config/diff.php?app= URI.	Groupware
CVE-2019-9858	May 29, 2019	Remote code execution was discovered in Horde Groupware Webmail 5.2.22 and 5.2.17 Remote code execution was discovered in Horde Groupware Webmail 5.2.22 and 5.2.17. Horde/Form/Type.php contains a vulnerable class that handles image upload in forms. When the Horde_Form_Type_image method onSubmit() is called on uploads, it invokes the functions getImage() and _getUpload(), which uses unsanitized user input as a path to save the image. The unsanitized POST parameter object[photo][img][file] is saved in the $upload[img][file] PHP variable, allowing an attacker to manipulate the $tmp_file passed to move_uploaded_file() to save the uploaded file. By setting the parameter to (for example) ../usr/share/horde/static/bd.php, one can write a PHP backdoor inside the web root. The static/ destination folder is a good candidate to drop the backdoor because it is always writable in Horde installations. (The unsanitized POST parameter went probably unnoticed because it's never submitted by the forms, which default to securely using a random path.)	Groupware
CVE-2017-17688	May 16, 2018	The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL. NOTE: third parties report that this is a problem in applications that mishandle the Modification Detection Code (MDC) feature or accept an obsolete packet type, not a problem in the OpenPGP specification	Horde Imp
CVE-2017-16908	Nov 20, 2017	In Horde Groupware 5.2.19, there is XSS via the Name field during creation of a new Resource In Horde Groupware 5.2.19, there is XSS via the Name field during creation of a new Resource. This can be leveraged for remote code execution after compromising an administrator account, because the CVE-2015-7984 CSRF protection mechanism can then be bypassed.	Groupware
CVE-2017-16907	Nov 20, 2017	In Horde Groupware 5.2.19 and 5.2.21, there is XSS In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.	Groupware
CVE-2017-16906	Nov 20, 2017	In Horde Groupware 5.2.19-5.2.22, there is XSS In Horde Groupware 5.2.19-5.2.22, there is XSS via the URL field in a "Calendar -> New Event" action.	Groupware
CVE-2017-15235	Oct 11, 2017	The File Manager (gollem) module 3.0.11 in Horde Groupware 5.2.21 allows remote attackers to bypass Horde authentication for file downloads via a crafted fn parameter The File Manager (gollem) module 3.0.11 in Horde Groupware 5.2.21 allows remote attackers to bypass Horde authentication for file downloads via a crafted fn parameter that corresponds to the exact filename.	Groupware
CVE-2015-7984	Nov 19, 2015	Multiple cross-site request forgery (CSRF) vulnerabilities in Horde before 5.2.8, Horde Groupware before 5.2.11, and Horde Groupware Webmail Edition before 5.2.11 allow remote attackers to hijack the authentication of administrators for requests Multiple cross-site request forgery (CSRF) vulnerabilities in Horde before 5.2.8, Horde Groupware before 5.2.11, and Horde Groupware Webmail Edition before 5.2.11 allow remote attackers to hijack the authentication of administrators for requests that execute arbitrary (1) commands via the cmd parameter to admin/cmdshell.php, (2) SQL queries via the sql parameter to admin/sqlshell.php, or (3) PHP code via the php parameter to admin/phpshell.php.	Groupware Horde Application Framework
CVE-2012-0791	Jan 24, 2012	Multiple cross-site scripting (XSS) vulnerabilities in Horde IMP before 5.0.18 and Horde Groupware Webmail Edition before 4.0.6 Multiple cross-site scripting (XSS) vulnerabilities in Horde IMP before 5.0.18 and Horde Groupware Webmail Edition before 4.0.6 allow remote attackers to inject arbitrary web script or HTML via the (1) composeCache, (2) rtemode, or (3) filename_* parameters to the compose page; (4) formname parameter to the contacts popup window; or (5) IMAP mailbox names. NOTE: some of these details are obtained from third party information.	Imp Dynamic Imp Groupware Webmail Edition And others...
CVE-2010-1638	Jun 22, 2010	The IMP plugin in Horde The IMP plugin in Horde allows remote attackers to bypass firewall restrictions and use Horde as a proxy to scan internal networks via a crafted request to an unspecified test script. NOTE: this is only a vulnerability when the administrator does not follow recommendations in the product's installation documentation.	Horde
CVE-2007-1679	Mar 26, 2007	Multiple cross-site scripting (XSS) vulnerabilities in Horde Groupware Webmail 1.0 Multiple cross-site scripting (XSS) vulnerabilities in Horde Groupware Webmail 1.0 allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors in (1) imp/search.php and (2) ingo/rule.php. NOTE: this issue has been disputed by the vendor, noting that the search.php issue was resolved in CVE-2006-4255, and attackers can only use rule.php to inject XSS into their own pages	Groupware
CVE-2002-2024	Dec 31, 2002	Horde IMP 2.2.7 allows remote attackers to obtain the full web root pathname Horde IMP 2.2.7 allows remote attackers to obtain the full web root pathname via an HTTP request for (1) poppassd.php3, (2) login.php3?reason=chpass2, (3) spelling.php3, and (4) ldap.search.php3?ldap_serv=nonsense which leaks the information in error messages.	Imp