In all versions of GitLab CE/EE since version 11.3, the endpoint for auto-completing Assignee discloses the members of private groups.

published 2022-03-28 4 y ago modified 2026-09-08 2 mo ago also BIT-gitlab-2021-39876 , EUVD-2021-26233

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits: 0; none known

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

0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

gitlab.com https://gitlab.com/gitlab-org/gitlab/-/issues/29683 referenced PoC, tagged "exploit" by a source, unverified

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	>=11.3.0, <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-863 Incorrect Authorization

Technology feeds

GitLab rss critical rss

References

gitlab.com /gitlab-org/gitlab/-/issues/29683
exploit, issue-tracking, vendor-advisory, advisory
gitlab.com /gitlab-org/cves/-/blob/master/2021/CVE-2021-39876.json
vendor-advisory, advisory
hackerone.com /reports/627507
permissions-required, third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2021-39876
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