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Fencer Intel
high 7.7

CVE-2021-39877 json

A vulnerability was discovered in GitLab starting with version 12.2 that allows an attacker to cause uncontrolled resource consumption with…

published 5y ago modified last mo. also BIT-gitlab-2021-39877 , EUVD-2021-26234

cvss
7.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

A vulnerability was discovered in GitLab starting with version 12.2 that allows an attacker to cause uncontrolled resource consumption with a specially crafted file.

Patch / fix

  • bitnami gitlab 14.1.7, 14.2.5, 14.3.1
  • gitlab gitlab 14.1.7, 14.2.5, 14.3.1
  • gitlab gitlab_enterprise 14.1.7, 14.2.5, 14.3.1
  • gitlab Arch Linux 14.3.1-1

arch linux advisories AVG-2431

Is CVE-2021-39877 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.1 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami gitlab
>=12.2.0, <14.1.7
>=14.2.0, <14.2.5
>=14.3.0, <14.3.1
14.1.7
14.2.5
14.3.1

Affected products

  • GitLab GitLab

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Intel 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.