CVE-2026-89430 Gitea push mirror SSRF and forced writes to internal Git hosts

What is CVE-2026-89430?

CVE-2026-89430 is a high-severity server-side request forgery vulnerability in Gitea Gitea, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Gitea validated a push mirror's remote address against the `[migrations]` allow and block lists only when the mirror was created. Each synchronization passed the stored address directly to `git push`, so a name that later resolved to a blocked or internal address was still reached. A user with administrator access to a repository, which includes repositories they create themselves, could aim push mirror synchronization at internal Git services and force-push the repository's contents to them.

Weakness: CWE-918, CWE-367

Which versions are affected by CVE-2026-89430?

1 open source package ship an affected version, including gitea. It affects 1 product.

Products include Gitea Gitea.

How do I fix CVE-2026-89430?

Upgrade gitea to 28.0.0 or later.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-89430 being exploited?

There is no known exploitation of CVE-2026-89430 in the wild and no public exploit code.

Other vulnerabilities in Gitea Gitea

• CVE-2026-60004 Gitea Code Injection Exploited Critical 9.8
• CVE-2026-73278 Gitea WebAuthn bypass during OAuth and OIDC sign-in Critical 9.8
• CVE-2026-94205 Gitea fork workflow approval bypass through maintainer-triggered events Critical 9.8
• CVE-2022-42968 Gitea vulnerable to Argument Injection Critical 9.8
• CVE-2021-45330 Improper Privilege Management in Gitea Critical 9.8

All Gitea Gitea vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-gitea-2026-89430, GHSA-hcgw-r9gf-8mph, MINI-4g7g-fp5c-v3vx, MINI-828q-2q4r-4c86.