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Fencer Vulns
high 7.5

CVE-2020-13343 json

An issue has been discovered in GitLab affecting all versions starting from 11.2.

published 2020-10-06 6 y ago modified 2026-09-10 1 mo ago also BIT-gitlab-2020-13343 , EUVD-2020-5603

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

An issue has been discovered in GitLab affecting all versions starting from 11.2. Unauthorized Users Can View Custom Project Template

Patch / fix

  • bitnami gitlab 13.2.10, 13.3.7, 13.4.2
  • gitlab gitlab 13.2.10, 13.3.7, 13.4.2
  • gitlab gitlab_enterprise 13.2.10, 13.3.7, 13.4.2

Exploit prediction

1.50% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/689314 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami gitlab
>=11.2.0, <13.2.10
>=13.3.0, <13.3.7
>=13.4.0, <13.4.2
13.2.10
13.3.7
13.4.2

Affected products

  • GitLab GitLab

Classification

Weakness
  • CWE-668 Exposure of Resource to Wrong Sphere
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.