CVE-2026-114723

Summary

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the ImageMagick resource limits to be bypassed during thumbnail generation. When rcube_image falls back to GD, the available-memory check was applied only on Windows, so on other platforms a crafted image with large dimensions was processed by GD without any resource limit and could exhaust server memory. Upstream fixed this in the commit “Fix ImageMagick resource limits bypass by GD fallback during thumbnail generation”, which applies the memory check on all platforms.

Impact & exploitability

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://github.com/roundcube/roundcubemail/commit/0bea81121efd96f07432a837f391dbdd0dffa33f ↗

Additional information

• NVD record
• https://github.com/roundcube/roundcubemail/commit/0bea81121efd96f07432a837f391dbdd0dffa33fPatch
• https://github.com/roundcube/roundcubemail/commit/d28a5703294e971a577e3c4f7bfc33362e3f04cfPatch
• https://bugs.debian.org/1151279Advisory
• 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