Memory Consumption Vulnerability in Gitea by Go Gitea
CVE-2026-96580

7.5HIGH

Key Information:

Vendor

Gitea

Status
Gitea
Vendor
CVE Published:
6 October 2026

What is CVE-2026-96580?

A memory consumption vulnerability occurs in Gitea when expanding the static strategy.matrix into a full Cartesian product without a size limit during workflow runs. This issue emerges before the fork pull request approval gate is applied, allowing potential exploiters to create a small workflow file that expands to an excessively large number of jobs. Such exploitation can lead to excessive consumption of server memory, potentially crashing the Gitea process. As a precautionary measure, the system now rejects static matrices exceeding 256 combinations before expansion, thus mitigating the risks associated with this vulnerability.

Affected Version(s)

Gitea 0 <= 1.27.3

References

https://github.com/go-gitea/gitea/security/advisories/GHS...
vendor-advisory
https://github.com/go-gitea/gitea/pull/39295
patch
https://blog.gitea.com/release-of-28.0.0/
release-notes

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

https://github.com/smoke-wolf
https://github.com/Kushalkhemka
https://github.com/mayank-jangid-moon
https://github.com/skigeek16
https://github.com/opensec-intelligence
https://github.com/silverwind
https://github.com/bircni
.