CVE-2026-114723 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.

What is CVE-2026-114723?

CVE-2026-114723 is a low-severity vulnerability in Roundcube Webmail, published on 22 Oct 2026.

Official description

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.

Weakness: CWE-770

Which versions are affected by CVE-2026-114723?

How do I fix CVE-2026-114723?

Upgrade to a fixed version.

Is CVE-2026-114723 being exploited?

There is no known exploitation of CVE-2026-114723 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-114723, GHSA-f843-mx73-628v, UBUNTU-CVE-2026-114723.