CVE-2026-70406 Details
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.
A vulnerability in Gitea's token repository-access check allows a public-only token with read:repository scope to access private repository data. This issue arises because the shared comparison helper, used for routing pull request creations and comparisons, does not include the necessary token validation. As a result, the token can bypass its public-only restriction and access commit histories and diffs from private repositories, exploiting a gap in Gitea's permission checks.
Upgrade to Gitea version 1.27.3, which includes the necessary token access checks in the comparison and pull request creation workflows.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 14, 2026CISA-ADP
Assessed Oct 14, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://blog.gitea.com/release-of-1.27.3/ | Gitea Limited | Release NotesVendor |
| https://github.com/go-gitea/gitea/pull/39006 | Gitea Limited | Issue TrackingVendor |
| https://github.com/go-gitea/gitea/pull/39013 | Gitea Limited | Issue TrackingVendor |
| https://github.com/go-gitea/gitea/releases/tag/v1.27.3 | Gitea Limited | Release NotesVendor |
| https://github.com/go-gitea/gitea/security/advisories/GHSA-m78w-jjjx-gp8r | Gitea Limited | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | Gitea Limited |
Affected Products
| Product | Versions |
|---|---|
| Gitea | <= 1.27.2 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 14, 2026 | CVE Modified | CISA-ADP |
| Oct 14, 2026 | New CVE Received | Gitea Limited |