CVE-2021-39900

Severity: low (CVSS 2.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-10-04 · updated 2026-06-17
Weakness: CWE-532

Description

Information disclosure from SendEntry in GitLab starting with 10.8 allowed exposure of full URL of artifacts stored in object-storage with a temporary availability via Rails logs.

Affected products

GitLab: from 10.8.0 before 14.1.7; from 14.2.0 before 14.2.5; 14.3.0 — fixed in 14.1.7, 14.2.5

How to fix

Upgrade to a fixed version: GitLab 14.1.7, 14.2.5. Check the vendor advisory for mitigations.

References

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39900.json
https://gitlab.com/gitlab-org/gitlab/-/issues/325088
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39900.json
https://gitlab.com/gitlab-org/gitlab/-/issues/325088

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