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Fencer Vulns
medium 4.3

CVE-2020-13311 json

A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4.

published 2020-09-14 6 y ago modified 2026-09-08 2 mo ago also BIT-gitlab-2020-13311 , EUVD-2020-5571

cvss
4.3
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

A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. Wiki was vulnerable to a parser attack that prohibits anyone from accessing the Wiki functionality through the user interface.

Patch / fix

  • bitnami gitlab 13.1.10, 13.2.8, 13.3.4
  • gitlab gitlab 13.1.10, 13.2.8, 13.3.4
  • gitlab gitlab_enterprise 13.1.10, 13.2.8, 13.3.4

Exploit prediction

1.51% chance of exploitation in the next 30 days, higher than 74% 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 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P
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
>=1.0.0, <13.1.10
>=13.2.0, <13.2.8
>=13.3.0, <13.3.4
13.1.10
13.2.8
13.3.4

Affected products

  • GitLab GitLab

Classification

Weakness
  • CWE-706 Use of Incorrectly-Resolved Name or Reference
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.