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VulnerabilityPublished

CVE-2026-110264: GitLab · Integer Overflow or Wraparound

Affects GitLabSource CVE Database V5

0

Not known to be exploited · CVSS 10.0 Critical · fixed in 19.5.1 : patch GitLab as a priority.

Data as of 26 Oct 2026, 17:30 UTC

CVSS 3.1 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 62% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers can reliably automate steps 1–4 of the kill chain
Technical impact
Total control over the software or total information disclosure

CISA SSVC assessment, 2026-10-21.

Patch
Available – fixed in 19.5.1, 19.4.3, 19.3.6 +4
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. Weaponised: 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 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
GitLabGitLabAffected
  • >=19.5 <19.5.1
Fixed in
  • 19.5.1
GitLabGitLabAffected
  • >=19.4 <19.4.3
Fixed in
  • 19.4.3
GitLabGitLabAffected
  • >=19.3 <19.3.6
Fixed in
  • 19.3.6
GitLabGitLabAffected
  • >=19.2 <19.2.9
Fixed in
  • 19.2.9
GitLabGitLabAffected
  • >=19.1 <19.1.9
Fixed in
  • 19.1.9
GitLabGitLabAffected
  • >=19.0 <19.0.10
Fixed in
  • 19.0.10

CPE configurations (1)

  • cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

AI-suggested

Upgrade GitLab CE/EE to one of the fixed versions: 18.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, or 19.5.1. Applying these official fixes fully mitigates the vulnerability. No other mitigation is indicated.

Description

CVE-2026-110264 is a critical integer overflow vulnerability in GitLab CE/EE affecting multiple version ranges from 7.0 up to fixed releases in late 2023 and 2024. An unauthenticated attacker could exploit this flaw by crafting a malicious regular expression that triggers an integer overflow during compilation, potentially allowing arbitrary code execution on the GitLab server.

References

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