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Fencer Vulns
medium 4.3

CVE-2023-4522 json

Improper Validation of Specified Type of Input in GitLab

published 2023-08-30 3 y ago modified 2026-09-10 59 d ago also BIT-gitlab-2023-4522 , EUVD-2023-54377

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

An issue has been discovered in GitLab affecting all versions before 16.2.0. Committing directories containing LF character results in 500 errors when viewing the commit.

Patch / fix

  • bitnami gitlab 16.2.0
  • GitLab GitLab 16.2.0

Exploit prediction

1.15% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/1937213 referenced PoC, tagged "exploit" by a source, unverified
  • gitlab.com https://gitlab.com/gitlab-org/gitlab/-/issues/406817 referenced PoC, tagged "exploit" by a source, unverified

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
<16.2.0
16.2.0

Affected products

  • GitLab GitLab

Classification

Weakness
  • CWE-1287 Improper Validation of Specified Type of Input
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.