CVE-2026-73804

high

Description

Gitea allows a token with write:user scope to register an attacker-controlled SSH public key on the token owner's account. API requests signed with the corresponding private key authenticate as that account through HTTP Signature without API token scope information, causing route-level token scope checks to be skipped. This converts a user-scoped token into an unscoped API authentication method while retaining the account's normal role and repository permissions.

References

https://github.com/go-gitea/gitea/security/advisories/GHSA-q55v-4cmj-xh65

https://github.com/go-gitea/gitea/releases/tag/v1.27.2

https://github.com/go-gitea/gitea/pull/38895

https://github.com/go-gitea/gitea/pull/38862

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101108

https://blog.gitea.com/release-of-1.27.2/

Details

Source: Mitre, NVD

Published: 2026-10-14

Updated: 2026-10-18

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.1

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

Severity: High

EPSS

EPSS: 0.00477