CVE-2026-89430

Gitea push mirror SSRF and forced writes to internal Git hosts

HIGH
8.1
CVSS Score
Published: October 6, 2026 at 07:23 PM UTC
Updated: October 13, 2026 at 04:46 PM UTC
1 product affected across 1 vendorGitea

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Severity
HIGH8.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v < 28.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-367CWE-918

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