Denial of Service Vulnerability in GitLab CE/EE
CVE-2025-14870

7.5HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
14 May 2026

What is CVE-2025-14870?

A vulnerability in GitLab CE/EE allows unauthenticated users to induce denial of service by sending specially crafted JSON payloads, due to inadequate input validation. This issue has been identified in multiple versions of the product, which could potentially allow attackers to disrupt services by exploiting this weakness. GitLab has released patches to address the issue, encouraging users to update their installations promptly to prevent exploitation.

Affected Version(s)

GitLab 18.5 < 18.9.7

GitLab 18.10 < 18.10.6

GitLab 18.11 < 18.11.3

References

https://hackerone.com/reports/3446641
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/584490
https://about.gitlab.com/releases/2026/05/13/patch-releas...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
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
.