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VulnerabilityPublished Updated

CVE-2026-114723: Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the ImageMagick resource limits to be

Source GCVE Database

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Authoritative record:CVE-2026-114723· Low 3.7

Not known to be exploited · CVSS 3.7 Low : upgrade to 1.7.5 or 1.6.20 when convenient.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 3.1 base score
3.7Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (mitre)CVSS 3.13.7
EPSS
0.3% chance of exploitation in 30 days – higher than 26% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.7.5, 1.6.20
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade Webmail to 1.7.5 or 1.6.20.

Affected software

ProductAffectedFixed in
RoundcubeWebmailAffected
  • >=1.7.0 <1.7.5
Fixed in
  • 1.7.5
RoundcubeWebmailAffected
  • >=1.6.0 <1.6.20
Fixed in
  • 1.6.20
GitHubWebmailpkg:github/WebmailOther threatsAffected
  • >=1.6.0 <1.6.20
  • >=1.7.0 <1.7.5
Fixed in
  • 1.6.20
  • 1.7.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

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.

References

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