CVE-2021-39927

Description

Server side request forgery protections in GitLab CE/EE versions between 8.4 and 14.4.4, between 14.5.0 and 14.5.2, and between 14.6.0 and 14.6.1 would fail to protect against attacks sending requests to localhost on port 80 or 443 if GitLab was configured to run on a port other than 80 or 443

Category

3.5
CVSS
Severity: Low
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory gitlab.com Vendor Advisory gitlab.com
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/340476 broken link vendor advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39927.json vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-39927?
CVE-2021-39927 has been scored as a low severity vulnerability.
How to fix CVE-2021-39927?
To fix CVE-2021-39927, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39927 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-39927 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39927?
CVE-2021-39927 affects GitLab GitLab.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.