An authorization issue in the mirroring logic allowed read access to private repositories in GitLab CE/EE 10.6 and later through 13.0.5

published 2020-06-19 6 y ago modified 2026-09-10 59 d ago also BIT-gitlab-2020-13277 , EUVD-2020-5538

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits: 0; none known

Patch / fix

fixed in 3

bitnami gitlab 12.9.10, 12.10.11, 13.0.6
gitlab gitlab 12.9.10, 12.10.11, 13.0.6
gitlab gitlab_enterprise 12.9.10, 12.10.11, 13.0.6

Exploit prediction

1.85% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.3	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/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	6.3	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	gitlab	>=10.6.0, <12.9.10 >=12.10.0, <12.10.11 >=13.0.0, <13.0.6	12.9.10 12.10.11 13.0.6

Affected products

GitLab GitLab

Classification

Weakness

CWE-863 Incorrect Authorization

Technology feeds

GitLab rss critical rss

References

gitlab.com /gitlab-org/gitlab/-/issues/220972
broken-link, web
hackerone.com /reports/894569
permissions-required, web
gitlab.com /gitlab-org/cves/-/blob/master/2020/CVE-2020-13277.json
third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2020-13277
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