CVE-2021-39895

Severity: medium (CVSS 4.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-05 · updated 2026-06-17

Description

In all versions of GitLab CE/EE since version 8.0, an attacker can set the pipeline schedules to be active in a project export so when an unsuspecting owner imports that project, pipelines are active by default on that project. Under specialized conditions, this may lead to information disclosure if the project is imported from an untrusted source.

Affected products

GitLab: from 8.0.0 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-2021-39895.json
https://gitlab.com/gitlab-org/gitlab/-/issues/337824
https://hackerone.com/reports/1272535
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39895.json
https://gitlab.com/gitlab-org/gitlab/-/issues/337824
https://hackerone.com/reports/1272535

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