CVE-2021-39936

Name: CVE-2021-39936
Creator: NVD / NIST
Published: 2021-12-13T16:15:09.45+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2021-39936 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Improper access control in GitLab CE/EE affecting all versions starting from 10.7 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an attacker in possession of a deploy token to access a project's disabled wiki.. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

Description

Improper access control in GitLab CE/EE affecting all versions starting from 10.7 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an attacker in possession of a deploy token to access a project's disabled wiki.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

1.03%

59.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 10.7.0, < 14.3.6
Gitlab	Gitlab	>= 14.4.0, < 14.4.4
Gitlab	Gitlab	>= 14.5.0, < 14.5.2

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39936.jsonThird Party Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/241767Broken Link
https://hackerone.com/reports/964057Permissions Required, Third Party Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39936.jsonThird Party Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/241767Broken Link
https://hackerone.com/reports/964057Permissions Required, Third Party Advisory

Timeline

Published: Dec 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39936?

How severe is CVE-2021-39936?

CVE-2021-39936 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39936?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39936?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST