Vulnerability · Published Oct 14, 2026 · Assigned by Gitea

CVE-2026-70406Gitea private comparison disclosure with public-only tokens

Medium 6.5

In plain English

A medium-severity incorrect authorization in Gitea from Gitea. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 72.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Gitea	Gitea	0 – through 1.27.2

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

GitHub Security Advisory GHSA-m78w-jjjx-gp8r vendor-advisory
Gitea 1.27.3 release announcement release-notes
Fix: go-gitea/gitea pull request #39006 patch
Fix: go-gitea/gitea pull request #39013 patch
go-gitea/gitea v1.27.3 release release-notes