CVE-2026-114723
CVSS Score
3.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-770 |
| Vendor | roundcube |
| Product | webmail |
| Published | Oct 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
Roundcube / Webmail
1.6.0 < 1.6.20 1.7.0 < 1.7.5
References
bugs.debian.org: https://bugs.debian.org/1151279 github.com: https://github.com/roundcube/roundcubemail/commit/d28a5703294e971a577e3c4f7bfc33362e3f04cf roundcube.net: https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 github.com: https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 github.com: https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 github.com: https://github.com/roundcube/roundcubemail/commit/0bea81121efd96f07432a837f391dbdd0dffa33f