Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2024-02-12
• EPSS: 64% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of program/lib/Roundcube/rcube_string_replacer.php behavior.

CISA: Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that can lead to information disclosure via malicious link references in plain/text messages.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 4 Mar 2024): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• github.com/roundcube/roundcubemail/commit/e92ec206a886461245e1672d8530cc93c618a49bPatch
• lists.debian.org/debian-lts-announce/2023/09/msg00024.htmlMailing List
• roundcube.net/news/2023/09/15/security-update-1.6.3-releasedRelease Notes
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource