CVE-2026-70406— Gitea private comparison disclosure with public-only tokens
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 的共享比较功能助手在更新拉取请求时，省略了本应执行的仓库访问令牌检查。具有只读仓库范围（read:repository）的公共令牌可以通过一个公开的基线仓库来路由比较操作或创建拉取请求，从而获取属于该令牌所有者、但位于私有头部仓库中的提交历史和差异信息。这一行为绕过了令牌本身仅限于公共访问的限制；不过，该漏洞并未绕过账户本身的底层仓库权限检查。
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I. Basic Information for CVE-2026-70406
Vulnerability Information
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Vulnerability Title
Gitea private comparison disclosure with public-only tokens
Source: CVE Program / CVE List V5
Vulnerability Description
Gitea's shared comparison helper omits the token repository-access check used when updating pull requests. A public-only token with read:repository scope can route a comparison or pull request creation through a public base repository and retrieve commit history and diffs from a private head repository accessible to the token owner. This bypasses the token's public-only restriction; it does not remove the account's underlying repository permission checks.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-70406
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-70406 (2)
Other References for CVE-2026-70406 (2)
Other References for CVE-2026-70406 (1)
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https://blog.gitea.com/release-of-1.27.3/ release-notes
Same Patch Batch · Gitea · 2026-10-14 · 36 CVEs total
| CVE-2026-68964 | Gitea restricted-user SSH and GPG key metadata disclosure | |
| CVE-2026-70407 | Gitea organization listing token scope bypass | |
| CVE-2026-70396 | Gitea organization repository creation token scope bypass | |
| 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-2026-62925 | Gitea Alpine package parsing memory exhaustion | |
| CVE-2026-59774 | Gitea Org-mode file disclosure and code execution | |
| 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-2026-73804 | Gitea API token scope escalation through HTTP signatures | |
| 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
Same product: Gitea
-
CVE-2026-78433
Gitea private attachment disclosure through repository misma -
CVE-2026-78231
Gitea blind SSRF through OpenID assertion verification -
CVE-2026-73814
Gitea repository ownership escalation by administrators -
CVE-2026-73804
Gitea API token scope escalation through HTTP signatures -
CVE-2026-73800
Gitea reusable workflow secret exposure in pull_request_targ
Same vendor: Gitea
-
CVE-2026-78433
Gitea private attachment disclosure through repository misma -
CVE-2026-78231
Gitea blind SSRF through OpenID assertion verification -
CVE-2026-73814
Gitea repository ownership escalation by administrators -
CVE-2026-73804
Gitea API token scope escalation through HTTP signatures -
CVE-2026-73802
Gitea Runner host isolation bypass through container options
Same weakness: CWE-863
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CVE-2026-109382
WSP MCP <= 2.9.5 - Authenticated (Subscriber+) Sensitive Inf -
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ThinkCMF through 8.0.1 Incorrect Authorization in Admin REST -
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V. Comments for CVE-2026-70406
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