CVE-2026-15387

Acceptance of Extraneous Untrusted Data With Trusted Data in GitLab

State: Published
Severity: 4.3 Medium
Published: Aug 26, 2026
Updated: Aug 26, 2026
Reserved: Jul 10, 2026

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have influenced the execution environment of Pipeline Execution Policy enforcement jobs, due to improper handling of job dependencies.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	GitLab

Weaknesses

CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data

Affected Products

Product	Versions
GitLabGitLab	19.1 to before 19.1.7Affected 19.2 to before 19.2.5Affected 19.3 to before 19.3.1Affected

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/605632
HackerOne Bug Bounty Report #3754358technical-descriptionexploitpermissions-required
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released/

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