CVE-2026-70406

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.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-25)

CWE

CWE-863

Published

2026-10-14

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

References

• https://blog.gitea.com/release-of-1.27.3/
• https://github.com/go-gitea/gitea/pull/39006
• https://github.com/go-gitea/gitea/pull/39013
• https://github.com/go-gitea/gitea/releases/tag/v1.27.3
• https://github.com/go-gitea/gitea/security/advisories/GHSA-m78w-jjjx-gp8r

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