Roundcube <=1.4.15/1.5.x<1.5.5/1.6.x<1.6.4 Stored XSS via SVG in HTML mail
CVE-2023-5631 Published on October 18, 2023
Stored XSS vulnerability in Roundcube
Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php behavior. This could allow a remote attacker
to load arbitrary JavaScript code.
Known Exploited Vulnerability
This Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that allows a remote attacker to run malicious JavaScript code.
The following remediation steps are recommended / required by November 16, 2023: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2023-5631 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2023-5631 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2023-5631
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2023-5631 are published in these products:
Affected Versions
Roundcubemail:- Version 1.6.0 and below 1.6.3 is affected.
- Version 1.5.0 and below 1.5.4 is affected.
- Version 1.4.0 and below 1.5.14 is affected.
- Version 1.6.4 is unaffected.
- Version 1.5.5 is unaffected.
- Version 1.5.15 is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.