Denial of Service Vulnerability in GitLab by GitLab Inc.
CVE-2026-8280

6.5MEDIUM

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
14 May 2026

What is CVE-2026-8280?

GitLab has addressed a significant vulnerability affecting its CE/EE versions that stemmed from inadequate input validation. This flaw could allow authenticated users to exploit the system by causing excessive memory consumption, potentially leading to service disruptions. It is crucial for users of the affected versions to implement the latest patches to safeguard their systems from potential denial of service attacks.

Affected Version(s)

GitLab 8.3 < 18.9.7

GitLab 18.10 < 18.10.6

GitLab 18.11 < 18.11.3

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/579035
https://hackerone.com/reports/3329085
technical-descriptionexploitpermissions-required
https://about.gitlab.com/releases/2026/05/13/patch-releas...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [a92847865](https://hackerone.com/a92847865) for reporting this vulnerability through our HackerOne bug bounty program
.