Improper Input Validation in GitLab Releases by GitLab
CVE-2026-1092

7.5HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab
Vendor
CVE Published:
8 April 2026

What is CVE-2026-1092?

An input validation flaw in GitLab CE/EE allows unauthenticated users to exploit improper handling of JSON payloads, potentially triggering a denial of service. This issue affects multiple versions up to and including GitLab 18.10.3. Users and administrators must ensure that updates are applied to mitigate risks associated with this vulnerability.

Affected Version(s)

GitLab 12.10 < 18.8.9

GitLab 18.9 < 18.9.5

GitLab 18.10 < 18.10.3

References

https://hackerone.com/reports/3487030
technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/586479
https://about.gitlab.com/releases/2026/04/08/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
.