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Fencer Vulns
medium 5.3

CVE-2020-26413 json

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.4 before 13.6.2.

published 2020-12-11 5 y ago modified 2026-09-08 2 mo ago also BIT-gitlab-2020-26413 , EUVD-2020-18960

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
34.9%
EPSS 34.9% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known, plus a Nuclei check

Summary

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.4 before 13.6.2. Information disclosure via GraphQL results in user email being unexpectedly visible.

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

34.93% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Gitlab CE/EE 13.4 - 13.6.2 - Information Disclosure nuclei detection template

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
>=13.4.0, <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.