Is CVE-2026-70406 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-70406?

CVE-2026-70406 has a CVSS v3 severity of MEDIUM (6.5).

Back

CVE-2026-70406

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.