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Fencer Vulns
medium 5.3

CVE-2020-26417 json

Information disclosure via GraphQL in GitLab CE/EE 13.1 and later exposes private group and project membership.

published 2020-12-11 5 y ago modified 2026-09-08 2 mo ago also BIT-gitlab-2020-26417 , EUVD-2020-18964

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

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.

Patch / fix

  • bitnami gitlab 13.4.7, 13.5.5, 13.6.2
  • gitlab gitlab 13.4.7, 13.5.5, 13.6.2
  • gitlab gitlab_enterprise 13.4.7, 13.5.5, 13.6.2
  • gitlab Arch Linux 13.6.2-1

arch linux advisories AVG-1333

Exploit prediction

1.44% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N
OSV 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
bitnami gitlab
>=13.1.0, <13.4.7
>=13.5.0, <13.5.5
>=13.6.0, <13.6.2
13.4.7
13.5.5
13.6.2

Affected products

  • GitLab GitLab CE/EE

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: add affected deb and rpm records.