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Vulnerability · Published Oct 22, 2026 · Assigned by mitre

CVE-2026-114723

Low 3.7

In plain English

A low-severity resource allocation without limits in Webmail from Roundcube. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.5%top 60.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12roundcubeno fix listedDEBIAN-CVE-2026-114723
Debian:13roundcube1.6.20+dfsg-0+deb13u1DEBIAN-CVE-2026-114723
Debian:14roundcube1.6.20+dfsg-1DEBIAN-CVE-2026-114723
Ubuntu:26.10imagemagickno fix listedUBUNTU-CVE-2026-114723
Ubuntu:26.10roundcubeno fix listedUBUNTU-CVE-2026-114723

Affected products (as reported)

VendorProductVersions
Roundcube Webmail 1.6.0 – before 1.6.201.7.0 – before 1.7.5

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

References