CVE-2026-96400— Gitea migration SSRF to reserved addresses through ALLOWED_DOMAINS
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.
当 配置项设置为匹配项（例如 或主机名通配符）时，Gitea 的迁移 URL 验证可能会允许保留地址和链路本地地址（例如 ），即使 （禁止访问本地网络）也未生效。原因是本地网络黑名单未涵盖这些地址范围，并且只要主机名匹配允许列表，无论其解析后的实际 IP 地址如何，都会被接受。因此，具备在该实例上启动迁移任务权限的用户，能够从 Gitea 服务器访问这些受保护的地址。注意：默认情况下 为空，此漏洞不影响默认配置。
Possible ATT&CK Techniques 2 AI
T1557 · Adversary-in-the-Middle T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-96400
Vulnerability Information
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Vulnerability Title
Gitea migration SSRF to reserved addresses through ALLOWED_DOMAINS
Source: CVE Program / CVE List V5
Vulnerability Description
With `[migrations] ALLOWED_DOMAINS` set to a matching entry such as `*` or a hostname wildcard, Gitea's migration URL validation could permit reserved and link-local addresses, such as `169.254.169.254`, even when `ALLOW_LOCALNETWORKS = false`. The local-network block list did not cover these ranges, and a hostname matching the allow list was accepted regardless of its resolved address. A user who can start migrations on such an instance could reach these addresses from the Gitea server; the default empty `ALLOWED_DOMAINS` configuration is not affected.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-96400
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-96400 (4)
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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-2026-104636 | Gitea SSRF through Git HTTP redirects in mirrors and fetches | |
| 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-2026-96399 | 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-2026-104632 | Gitea fork workflow approval bypass through cancel and rerun | |
| CVE-2026-94205 | Gitea fork workflow approval bypass through maintainer-triggered events | |
| 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-2026-89430 | Gitea push mirror SSRF and forced writes to internal Git hosts | |
| 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-2026-96399
Gitea denial of service through external issue tracker patte
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-2026-96399
Gitea denial of service through external issue tracker patte
Same weakness: CWE-918
-
CVE-2026-106032
Server-side request forgery and local file read via unrestri -
CVE-2026-106455
Backstage: Improper validation of MkDocs plugin configuratio -
CVE-2026-101150
Security Advisory 0186 -
CVE-2026-101149
Security Advisory 0186 -
CVE-2026-70357
Gitea repository migration SSRF through DNS rebinding
V. Comments for CVE-2026-96400
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