CVE-2026-114728

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.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*

History

29 Oct 2026, 13:51

Type Values Removed Values Added
First Time Roundcube
Roundcube webmail
CPE cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
References () https://bugs.debian.org/1151279 - () https://bugs.debian.org/1151279 - Third Party Advisory, Mailing List
References () https://github.com/roundcube/roundcubemail/commit/2f74267f0e13bed7182b1d2294cc4f3c5c46dcee - () https://github.com/roundcube/roundcubemail/commit/2f74267f0e13bed7182b1d2294cc4f3c5c46dcee - Patch
References () https://github.com/roundcube/roundcubemail/commit/ff4fcfdd2952f9d09947cc9c18137f381f27caf1 - () https://github.com/roundcube/roundcubemail/commit/ff4fcfdd2952f9d09947cc9c18137f381f27caf1 - Patch
References () https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 - () https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 - Release Notes
References () https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 - () https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 - Release Notes
References () https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 - () https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 - Issue Tracking, Release Notes

22 Oct 2026, 02:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-22 02:17

Updated : 2026-10-29 13:51


NVD link : CVE-2026-114728

Mitre link : CVE-2026-114728

CVE.ORG link : CVE-2026-114728


JSON object : View

Products Affected

roundcube

  • webmail
CWE
CWE-184

Incomplete List of Disallowed Inputs