CVE-2021-39881

Description

In all versions of GitLab CE/EE since version 7.7, the application may let a malicious user create an OAuth client application with arbitrary scope names which may allow the malicious user to trick unsuspecting users to authorize the malicious client application using the spoofed scope name and description.

3.5

CVSS

Severity: Low

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.25%

Vendor Advisory gitlab.com

Affected: GitLab GitLab

References

Link	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/26695	broken link
https://hackerone.com/reports/494530	third party advisory permissions required
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39881.json	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-39881?: CVE-2021-39881 has been scored as a low severity vulnerability.
How to fix CVE-2021-39881?: To fix CVE-2021-39881, 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-2021-39881 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-39881 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-2021-39881?: CVE-2021-39881 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.