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CVE-2026-26079

CVE-2026-26079

CVSS 4.7 MEDIUMEPSS 0.3%CWE-829
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:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Affected products
Roundcube · Webmail

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References
https://github.com/roundcube/roundcubemail/commit/1f4c3a5af5033747f9685a8a395dbd8228d19816https://github.com/roundcube/roundcubemail/commit/2b5625f1d2ef7e050fd1ae481b2a52dc35466447https://github.com/roundcube/roundcubemail/commit/53d75d5dfebef235a344d476b900c20c12d52b01https://github.com/roundcube/roundcubemail/commit/5a3315cce587e0be58335d11ff9a5571c90494a5https://github.com/roundcube/roundcubemail/commit/bf89cbaa5897d8ad62e8057d9a3f6babb90b7954https://github.com/roundcube/roundcubemail/commit/c15f5dbf093a497e19a749b20e7f8fb5a9c24cdehttps://github.com/roundcube/roundcubemail/releases/tag/1.5.13https://github.com/roundcube/roundcubemail/releases/tag/1.6.13https://roundcube.net/news/2026/02/08/security-updates-1.6.13-and-1.5.13