🔐 CVE Alert

CVE-2026-12664

MEDIUM 6.8

Incorrect Authorization in GitLab

CVSS Score
6.8
EPSS Score
0.0%
EPSS Percentile
0th

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, could have allowed an authenticated user with a read_api-scoped token to retrieve a project's incoming email address and create work items, bypassing the token's restrictions, due to insufficient scope enforcement on a GraphQL field.

CWE CWE-863
Vendor gitlab
Product gitlab
Ecosystems
Industries
Technology
Published Oct 21, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Affected Versions

GitLab / GitLab
18.2 < 19.3.6 19.4 < 19.4.3 19.5 < 19.5.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗
gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/603510 hackerone.com: https://hackerone.com/reports/3735499 docs.gitlab.com: https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/

Credits

Thanks [go7f0](https://hackerone.com/go7f0) for reporting this vulnerability through our HackerOne bug bounty program