CVE-2026-5377: GitLab · Incorrect Authorization
Affects GitLabSource GCVE Database
Not known to be exploited · CVSS 4.3 Medium · fixed in 18.11.1 : update GitLab when convenient.
Data as of 12 Nov 2026, 00:47 UTC
Thin evidence
One scorer or none| CNA (GitLab) | CVSS 3.1 | 4.3 |
|---|
- Patch
- Available – fixed in 18.11.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 22 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubgitlab-org/gitlabpkg:github/gitlab-org/gitlabOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade GitLab CE/EE from version 18.11 to 18.11.1 or later, where this authorization issue has been fixed. No additional mitigation is required once the patch is applied.
Description
CVE-2026-5377 is an authorization vulnerability in GitLab CE/EE version 18.11 that allowed authenticated users to view titles of confidential or private issues in public projects. The flaw was due to improper access control in the issue description rendering process. This issue was fixed in version 18.11.1.