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Fencer Vulns
medium 6.5

CVE-2021-39903 json

In all versions of GitLab CE/EE since version 13.0, a privileged user, through an API call, can change the visibility level of a group or a…

published 2021-11-04 5 y ago modified 2026-09-10 1 mo ago also BIT-gitlab-2021-39903 , EUVD-2021-26259

cvss
6.5
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 72%
public exploits
0
none known

Summary

In all versions of GitLab CE/EE since version 13.0, a privileged user, through an API call, can change the visibility level of a group or a project to a restricted option even after the instance administrator sets that visibility option as restricted in settings.

Patch / fix

  • bitnami gitlab 14.2.6, 14.3.4, 14.4.1
  • gitlab gitlab 14.2.6, 14.3.4, 14.4.1
  • gitlab gitlab_enterprise 14.2.6, 14.3.4, 14.4.1
  • gitlab Arch Linux 14.5.0-1

arch linux advisories AVG-2503

Exploit prediction

1.41% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:P/A:N
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
bitnami gitlab
>=13.0.0, <14.2.6
>=14.3.0, <14.3.4
>=14.4.0, <14.4.1
14.2.6
14.3.4
14.4.1

Affected products

  • GitLab GitLab

Classification

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: Enhance with deb and rpm package type records.