CVE-2026-73804— Gitea API token scope escalation through HTTP signatures
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 存在一个安全漏洞：具有 权限范围的访问令牌允许攻击者在该令牌所有者账户上注册其控制的 SSH 公钥。使用对应私钥签名的 API 请求，可以通过 HTTP 签名机制以该账户身份进行认证，但不会附带访问令牌的权限范围信息。这导致基于路由的令牌权限范围检查被绕过。此漏洞将一个用户权限范围内的访问令牌转变为无权限范围限制的 API 认证方式，同时保留该账户原有的正常角色和仓库访问权限。
Possible ATT&CK Techniques 1 AI
T1528 · Steal Application Access Token
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I. Basic Information for CVE-2026-73804
Vulnerability Information
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Vulnerability Title
Gitea API token scope escalation through HTTP signatures
Source: CVE Program / CVE List V5
Vulnerability Description
Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account. API requests signed with the corresponding private key authenticate as that account through HTTP Signature without API token scope information, causing route-level token scope checks to be skipped. This converts a user-scoped token into an unscoped API authentication method while retaining the account's normal role and repository permissions.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-73804
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-73804 (2)
Vendor Pages for CVE-2026-73804 (1)
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🔗 Release v1.27.2 · go-gitea/gitea · GitHub release-notes
Other References for CVE-2026-73804 (1)
Other References for CVE-2026-73804 (1)
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https://blog.gitea.com/release-of-1.27.2/ release-notes
Same Patch Batch · Gitea · 2026-10-14 · 36 CVEs total
| CVE-2026-62925 | Gitea Alpine package parsing memory exhaustion | |
| CVE-2026-70407 | Gitea organization listing token scope bypass | |
| CVE-2026-70396 | Gitea organization repository creation token scope bypass | |
| CVE-2026-70406 | Gitea private comparison disclosure with public-only tokens | |
| CVE-2026-70400 | Gitea private migration creation with public-only tokens | |
| CVE-2026-70402 | Gitea local code execution through writable Git hooks | |
| CVE-2026-67577 | Gitea restricted-user activity and heatmap disclosure | |
| CVE-2026-63792 | Gitea private reusable workflow disclosure to fork runs | |
| CVE-2026-63021 | Gitea Swift package manifest memory exhaustion | |
| CVE-2026-59774 | Gitea Org-mode file disclosure and code execution | |
| CVE-2026-68964 | Gitea restricted-user SSH and GPG key metadata disclosure | |
| CVE-2026-68957 | Gitea restricted-user issue search disclosure | |
| CVE-2026-73814 | Gitea repository ownership escalation by administrators | |
| CVE-2026-73800 | Gitea reusable workflow secret exposure in pull_request_target | |
| CVE-2026-73535 | Gitea second-factor bypass through OpenID identity linking | |
| CVE-2026-73539 | Gitea external renderer argument injection and code execution | |
| CVE-2026-78231 | Gitea blind SSRF through OpenID assertion verification | |
| CVE-2026-78433 | Gitea private attachment disclosure through repository mismatch | |
| CVE-2026-73130 | Gitea repository initialization resource exhaustion | |
| CVE-2026-73802 | Gitea Runner host isolation bypass through container options |
Showing top 20 of 36 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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CVE-2026-78433
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Same weakness: CWE-266
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V. Comments for CVE-2026-73804
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