CVEvulnerability
CVE-2026-114728
5.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-10-22
- Last modified
- 2026-10-29
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-184
Description
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass in the handling of FuncIRI attributes. rcube_washtml detected the CSS url() token with a pattern that enumerated only some of its escaped spellings, so values using other CSS escape sequences, for example \000075rl( or u\72 l(, were not recognized and remote content was loaded from an HTML message without the user's consent. Upstream fixed this in the commit “Fix remote content blocking bypass via CSS escapes in FuncIRI attributes (again)”, which resolves CSS escapes before matching and also inspects the `to`, `from` and `by` attributes.
Affected configurations
• roundcube webmail (>= 1.6.0 < 1.6.20)
• roundcube webmail (>= 1.7.0 < 1.7.5)
Related
Weakness · CWE (1)
- CWE-184 Incomplete List of Disallowed Inputs weakness
References
- https://bugs.debian.org/1151279 Third Party Advisory, Mailing List
- https://github.com/roundcube/roundcubemail/commit/2f74267f0e13bed7182b1d2294cc4f3c5c46dcee Patch
- https://github.com/roundcube/roundcubemail/commit/ff4fcfdd2952f9d09947cc9c18137f381f27caf1 Patch
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 Release Notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 Release Notes
- https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 Issue Tracking, Release Notes