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Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 7.8 before 16.9.6, all versions starting from 16.10 before 16.10.4, all versions starting from 16.11 before 16.11.1. Under certain conditions, an attacker with their Bitbucket account credentials may be able to take over a GitLab account linked to another user's Bitbucket account, if Bitbucket is used as an OAuth 2.0 provider on GitLab.

PUBLISHED Reserved 2024-04-22 | Published 2024-04-25 | Updated 2026-04-24 | Assigner GitLab




HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Problem types

CWE-302: Authentication Bypass by Assumed-Immutable Data

Product status

Default status
unaffected

7.8 (semver) before 16.9.6
affected

16.10 (semver) before 16.10.4
affected

16.11 (semver) before 16.11.1
affected

Credits

This vulnerability has been discovered internally by GitLab team members [Sam Word](https://gitlab.com/SamWord) and [Rodrigo Tomonari](https://gitlab.com/rodrigo.tomonari) finder

References

gitlab.com/gitlab-org/gitlab/-/issues/452426 (GitLab Issue #452426) issue-tracking permissions-required

gitlab.com/gitlab-org/gitlab/-/issues/452426 (GitLab Issue #452426) issue-tracking permissions-required

cve.org (CVE-2024-4024)

nvd.nist.gov (CVE-2024-4024)

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