CVE-2026-114723

Name	CVE-2026-114723
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1151279

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
roundcube (PTS)	bookworm	1.6.5+dfsg-1+deb12u9	vulnerable
	bookworm (security)	1.6.5+dfsg-1+deb12u12	vulnerable
	trixie	1.6.18+dfsg-0+deb13u1	vulnerable
	trixie (security)	1.6.19+dfsg-0+deb13u1	vulnerable
	forky, sid	1.6.20+dfsg-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
roundcube	source	(unstable)	1.6.20+dfsg-1			1151279

Notes

https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5
Fixed by: https://github.com/roundcube/roundcubemail/commit/0bea81121efd96f07432a837f391dbdd0dffa33f (1.6.20)