Improper validation of commit author in GitLab CE/EE affecting all versions allowed an attacker to make several pages in a project impossib…

published 2021-08-25 5 y ago modified 2026-09-08 2 mo ago also BIT-gitlab-2021-22245 , EUVD-2021-9391

cvss: 2.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

Improper validation of commit author in GitLab CE/EE affecting all versions allowed an attacker to make several pages in a project impossible to view

Patch / fix

fixed in 3

bitnami gitlab 13.12.9, 14.0.7, 14.1.2
gitlab gitlab 13.12.9, 14.0.7, 14.1.2
gitlab gitlab_enterprise 13.12.9, 14.0.7, 14.1.2

Exploit prediction

1.37% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	2.7	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
NVD	3.1	2.7	CVSS:3.1/AV:N/AC:L/PR:H/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	2.7	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

Affected packages

ecosystem	package	affected	fixed in
bitnami	gitlab	<13.12.9 >=14.0.0, <14.0.7 >=14.1.0, <14.1.2	13.12.9 14.0.7 14.1.2

Affected products

GitLab GitLab

Classification

Weakness

CWE-20 Improper Input Validation

Technology feeds

GitLab rss critical rss

References

gitlab.com /gitlab-org/cves/-/blob/master/2021/CVE-2021-22245.json
vendor-advisory, advisory
gitlab.com /gitlab-org/gitlab/-/issues/255612
broken-link, web
hackerone.com /reports/987689
permissions-required, third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2021-22245
web

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.

Summary