Improper authorization checks in all versions of GitLab EE starting from 13.11 before 14.1.7, all versions starting from 14.2 before 14.2.5…

published 2021-10-04 5 y ago modified 2026-09-08 2 mo ago also BIT-gitlab-2021-39883 , EUVD-2021-26239

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

Improper authorization checks in all versions of GitLab EE starting from 13.11 before 14.1.7, all versions starting from 14.2 before 14.2.5, and all versions starting from 14.3 before 14.3.1 allows subgroup members to see epics from all parent subgroups.

Patch / fix

fixed in 3

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

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% 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:L/I:N/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N
OSV	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	gitlab	>=13.11.0, <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

Technology feeds

GitLab rss critical rss

References

gitlab.com /gitlab-org/cves/-/blob/master/2021/CVE-2021-39883.json
vendor-advisory, advisory
gitlab.com /gitlab-org/gitlab/-/issues/334279
broken-link, web
nvd.nist.gov /vuln/detail/CVE-2021-39883
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