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5.3

GitLab may expose private group and project membership

CVE-2020-26417 · published 5 years ago
Summary

Certain versions of GitLab (13.1 through 13.6) can unintentionally reveal who belongs to private groups and projects when using its GraphQL interface. This could let unauthorized users see internal team structures. Upgrade GitLab to the latest release that includes the fix or apply the provided patches.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
gitlab gitlab >= 13.1.0, < 13.4.7
>= 13.5.0, < 13.5.5
>= 13.6.0, < 13.6.2
cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
Original advisory text
Information disclosure via GraphQL in GitLab CE/EE 13.1 and later exposes private group and project membership. This affects versions >=13.6 to <13.6.2, >=13.5 to <13.5.5, and >=13.1 to <13.4.7.
Information disclosure via GraphQL in GitLab CE/EE 13.1 and later exposes private group and project membership. This affects versions >=13.6 to <13.6.2, >=13.5 to <13.5.5, and >=13.1 to <13.4.7.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.3 Medium
Exploitation
1% chance of attack within 30 days
Type
CWE-200Information Exposure
Timeline
Published11 Dec 2020
Updated31 Oct 2026
First seen23 Aug 2026
Sources
CVE-2020-26417 · OSV
CVE-2020-26417 · NVD
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