Vulnerability Description
Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.
CVSS Score
4.7
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Related Weaknesses (CWE)
References
- https://github.com/roundcube/roundcubemail/commit/1f4c3a5af5033747f9685a8a395dbd
- https://github.com/roundcube/roundcubemail/commit/2b5625f1d2ef7e050fd1ae481b2a52
- https://github.com/roundcube/roundcubemail/commit/53d75d5dfebef235a344d476b900c2
- https://github.com/roundcube/roundcubemail/commit/5a3315cce587e0be58335d11ff9a55
- https://github.com/roundcube/roundcubemail/commit/bf89cbaa5897d8ad62e8057d9a3f6b
- https://github.com/roundcube/roundcubemail/commit/c15f5dbf093a497e19a749b20e7f8f
- https://github.com/roundcube/roundcubemail/releases/tag/1.5.13
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.13
- https://roundcube.net/news/2026/02/08/security-updates-1.6.13-and-1.5.13
FAQ
What is CVE-2026-26079?
CVE-2026-26079 is a vulnerability with a CVSS score of 4.7 (MEDIUM). Roundcube Webmail before 1.5.13 and 1.6 before 1.6.13 allows Cascading Style Sheets (CSS) injection, e.g., because comments are mishandled.
How severe is CVE-2026-26079?
CVE-2026-26079 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-26079?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.