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CVE-2021-39889

MEDIUMCVSS 4.3/10EPSS 0.81%

Last modified

CVE-2021-39889 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. In all versions of GitLab EE since version 14.1, due to an insecure direct object reference vulnerability, an endpoint may reveal the protected branch name to a malicious user who makes a crafted API call with the ID of the protected branch.. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

In all versions of GitLab EE since version 14.1, due to an insecure direct object reference vulnerability, an endpoint may reveal the protected branch name to a malicious user who makes a crafted API call with the ID of the protected branch.

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
0.81%

52.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GitlabGitlab>= 14.1.0, < 14.1.7
GitlabGitlab>= 14.2.0, < 14.2.5
GitlabGitlab>= 14.3.0, < 14.3.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-39889?
In all versions of GitLab EE since version 14.1, due to an insecure direct object reference vulnerability, an endpoint may reveal the protected branch name to a malicious user who makes a crafted API call with the ID of the protected branch.
How severe is CVE-2021-39889?
CVE-2021-39889 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39889?
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-2021-39889?

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

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Source: NVD / NIST