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

published 2020-09-15 6 y ago modified 2026-09-10 59 d ago also BIT-gitlab-2020-13303 , EUVD-2020-5563

cvss: 7.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.3%; EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits: 0; none known

A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. Due to improper verification of permissions, an unauthorized user can access a private repository within a public project.

Patch / fix

fixed in 3

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

1.35% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N
OSV	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

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-287 Improper Authentication

Technology feeds

GitLab rss critical rss

References

gitlab.com /gitlab-org/cves/-/blob/master/2020/CVE-2020-13303.json
vendor-advisory, advisory
gitlab.com /gitlab-org/gitlab/-/issues/238887
broken-link, web
hackerone.com /reports/962231
permissions-required, third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2020-13303
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