CVE-2026-89430— Gitea push mirror SSRF and forced writes to internal Git hosts
Quick assessment
Affected
Gitea Gitea
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Gitea 在创建推送镜像时，会依据 配置中的允许和禁止列表对远程地址进行验证；但在每次同步过程中，系统会直接将已存储的地址传递给 。因此，如果一个域名在后续解析中指向了被禁止或内部的地址，该镜像仍会访问目标地址。拥有仓库管理员权限的用户（包括其自行创建的仓库）可以利用此机制，将推送镜像的同步目标指向内部的 Git 服务，并强制推送该仓库的内容至内部服务。
Possible ATT&CK Techniques 3 AI
T1059 · Command and Scripting Interpreter T1110 · Brute Force T1133 · External Remote Services
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I. Basic Information for CVE-2026-89430
Vulnerability Information
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Vulnerability Title
Gitea push mirror SSRF and forced writes to internal Git hosts
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-89430
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Other References for CVE-2026-89430 (5)
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https://github.com/go-gitea/gitea/releases/tag/v28.0.0 release-notes
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https://blog.gitea.com/release-of-28.0.0/ release-notes
Same Patch Batch · Gitea · 2026-10-06 · 21 CVEs total
| CVE-2026-104632 | Gitea fork workflow approval bypass through cancel and rerun | |
| CVE-2026-73278 | Gitea WebAuthn bypass during OAuth and OIDC sign-in | |
| CVE-2026-79960 | Gitea deploy key pushes acting as the repository owner | |
| CVE-2026-70357 | Gitea repository migration SSRF through DNS rebinding | |
| CVE-2026-96580 | Gitea Actions memory exhaustion through large static matrices | |
| CVE-2026-96589 | Gitea private repository access retained after rejected transfer | |
| CVE-2026-96400 | Gitea migration SSRF to reserved addresses through ALLOWED_DOMAINS | |
| CVE-2026-96399 | Gitea denial of service through external issue tracker patterns | |
| CVE-2026-96404 | Gitea installer authentication bypass for existing accounts | |
| CVE-2026-104626 | Gitea fork workflow job revival through later approval | |
| CVE-2026-94205 | Gitea fork workflow approval bypass through maintainer-triggered events | |
| CVE-2026-104636 | Gitea SSRF through Git HTTP redirects in mirrors and fetches | |
| CVE-2026-101027 | Gitea migration SSRF through ALLOWED_DOMAINS address check bypass | |
| CVE-2026-101029 | Gitea migration and pull mirror SSRF through multi-answer DNS | |
| CVE-2026-95106 | Gitea review and execution mismatch through duplicate tree entries | |
| CVE-2026-95112 | Gitea issue reference parsing CPU exhaustion | |
| CVE-2026-103504 | Gitea API team demotion not applied to unit permissions | |
| CVE-2026-103667 | Gitea container registry stored XSS through blob media type | |
| CVE-2026-103059 | Gitea built-in SSH server authentication bypass through key case folding | |
| CVE-2026-103670 | Gitea trusted workflow cancellation by unapproved fork runs |
IV. Related Vulnerabilities
Same product: Gitea
-
CVE-2026-73278
Gitea WebAuthn bypass during OAuth and OIDC sign-in -
CVE-2026-96589
Gitea private repository access retained after rejected tran -
CVE-2026-96580
Gitea Actions memory exhaustion through large static matrice -
CVE-2026-96404
Gitea installer authentication bypass for existing accounts -
CVE-2026-96400
Gitea migration SSRF to reserved addresses through ALLOWED_D
Same vendor: Gitea
-
CVE-2026-73278
Gitea WebAuthn bypass during OAuth and OIDC sign-in -
CVE-2026-96589
Gitea private repository access retained after rejected tran -
CVE-2026-96580
Gitea Actions memory exhaustion through large static matrice -
CVE-2026-96404
Gitea installer authentication bypass for existing accounts -
CVE-2026-96400
Gitea migration SSRF to reserved addresses through ALLOWED_D
V. Comments for CVE-2026-89430
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