MSRXVulnerabilities / CVE-2026-114722
CVE-2026-114722
Published 2026-10-22 · Undergoing Analysis
CVE-2026-114722
6.5 MEDIUM
CVSS 3.1 · CNA · mitre.org
CVSS 3.1 · CNA · mitre.org
0.3%
chance of exploitation in the next 30 days (EPSS; higher than 16% of CVEs)
chance of exploitation in the next 30 days (EPSS; higher than 16% of CVEs)
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcube_utils::mod_css_styles() did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were left unscoped and applied to the whole Roundcube interface instead of being confined to the message body. This allows an HTML message to restyle application chrome for UI redressing and spoofing. Upstream fixed this in the commit “Fix CSS scoping bypass in HTML messages using at-rules”.
Scores
Affected products
- Roundcube Webmail: 1.6.0 to < 1.6.20; 1.7.0 to < 1.7.5
Weakness: CWE-669
6 references (advisories, patches, write-ups)
- https://bugs.debian.org/1151279
- https://github.com/roundcube/roundcubemail/commit/95b81ae12e2819a9b7e8636b5859b6244cda383e
- https://github.com/roundcube/roundcubemail/commit/ff9cf4a9bf3b7c66db9afe43fe5f1cc73b47ed35
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.20
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.5
- https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5
Sources: NVD, CVE.org, OSV.dev, FIRST EPSS. Missing ones did not answer or have no record yet.