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CVE-2026-110264VulnerabilityPublished

Bundesamt für Sicherheit in der Informationstechnik Amazon · Ruby: Mehrere Schwachstellen ermöglichen Codeausführung

Affects Bundesamt für Sicherheit in der Informationstechnik AmazonSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-110264· Critical 10.0

Not known to be exploited · CVSS 10.0 Critical : upgrade to 4.0.9 as a priority.

Data as of 10 Nov 2026, 11:35 UTC

CVSS 3.1 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitLab)CVSS 3.110.0
Patch
Available – fixed in 4.0.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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 10 Nov 2026.

What to do

Upgrade ruby to 4.0.9.

Affected software

ProductAffectedFixed in
RubyGemsrubypkg:gem/rubyOther threatsAffected
  • <4.0.9
Fixed in
  • 4.0.9

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

AI-suggested

A fixed version of Ruby (4.0.9) is available and included in Red Hat Enterprise Linux 10 updates. Users should apply the official Red Hat update RHSA-2026:96233 to remediate these vulnerabilities. No additional mitigation steps are indicated by the vendor.

Description

Multiple integer overflow vulnerabilities in the Ruby 4.0 regular expression compiler could allow code execution. These issues affect Ruby versions prior to 4.0.9 and have been addressed in the 4.0.9 release. Red Hat Enterprise Linux 10 users should update to the fixed version to mitigate the risk.

References

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