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CVE-2026-114722

6.5 medium SSVC exploitation: none Published
NVD · CVE.org

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”.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 7

  1. StatusUndergoing Analysis → PublishedNVD modified 2026-10-28 02:13
  2. StatusPublished → Undergoing AnalysisNVD modified 2026-10-28 03:17
  3. StatusUndergoing Analysis → PublishedNVD modified 2026-10-22 01:39
  4. StatusPublished → Undergoing AnalysisNVD modified 2026-10-22 16:45
  5. StatusReceived → PublishedNVD modified 2026-10-22 01:39
  6. StatusPublished → ReceivedNVD modified 2026-10-22 02:17
  7. First seenCVSS 6.5 · roundcubeNVD modified 2026-10-22 01:39

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 6