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Fencer Vulns
medium 4.3

CVE-2022-4131 json

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.8 before 15.5.7, all versions starting from 15.6 befor…

published 2023-01-12 3 y ago modified 2026-09-10 1 mo ago also BIT-gitlab-2022-4131 , EUVD-2022-51496

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.8 before 15.5.7, all versions starting from 15.6 before 15.6.4, all versions starting from 15.7 before 15.7.2. An attacker may cause Denial of Service on a GitLab instance by exploiting a regex issue in how the application parses user agents.

Patch / fix

  • bitnami gitlab 15.5.7, 15.6.4, 15.7.2
  • gitlab gitlab 15.5.7, 15.6.4, 15.7.2
  • gitlab gitlab_enterprise 15.5.7, 15.6.4, 15.7.2

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
OSV 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem package affected fixed in
bitnami gitlab
>=10.8.0, <15.5.7
>=15.6.0, <15.6.4
>=15.7.0, <15.7.2
15.5.7
15.6.4
15.7.2

Affected products

  • GitLab GitLab

Classification

Weakness
  • CWE-1333 Inefficient Regular Expression Complexity
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.