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VulnerabilityPublished

CVE-2026-6515: GitLab · DEPRECATED: Insufficient Session Expiration

Affects GitLabSource GCVE Database

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Not known to be exploited · CVSS 5.4 Medium · fixed in 18.11.1 : update GitLab when convenient.

Data as of 12 Nov 2026, 00:38 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitLab)CVSS 3.15.4
Patch
Available – fixed in 18.11.1, 18.10.4, 18.9.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Apr 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 11 Nov 2026.

What to do

Upgrade gitlab-org/gitlab to 18.11.1, 18.10.4 or 18.9.6.

Affected software

ProductAffectedFixed in
GitHubgitlab-org/gitlabpkg:github/gitlab-org/gitlabOther threatsAffected
  • <18.9.6
  • >=18.10
  • <18.10.4
  • >=18.11
  • <18.11.1
Fixed in
  • 18.9.6
  • 18.10.4
  • 18.11.1

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

AI-suggested

Apply the official fixes provided by GitLab by upgrading to version 18.9.6 or later for the 18.2 branch, 18.10.4 or later for the 18.10 branch, and 18.11.1 or later for the 18.11 branch. These versions contain the patches that remediate the insufficient session expiration vulnerability. No additional mitigations are indicated by the vendor advisory.

Description

CVE-2026-6515 is a medium severity vulnerability in GitLab CE/EE affecting versions 18.2 through before 18.9.6, 18.10 through before 18.10.4, and 18.11 through before 18.11.1. It involves insufficient session expiration that could allow a user to access Virtual Registries using invalidated or incorrectly scoped credentials under certain conditions. The issue has been fixed in versions 18.9.6, 18.10.4, and 18.11.1.

References

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