MEDIUM 5.4 NVD
CVE-2026-81888
@hono/oauth-providers is Authentication middleware for Hono. Prior to version 0.8.6, the built-in social login providers accept an OAuth callback even when the
@hono/oauth-providers is Authentication middleware for Hono. Prior to version 0.8.6, the built-in social login providers accept an OAuth callback even when the `state` value is absent on both sides, so the anti-CSRF check passes for a callback that never came from a genuine login attempt. This defeats the `state`-based CSRF protection under default usage. Version 0.8.6 has a patch.
References
- https://github.com/honojs/middleware/commit/b37765f40b7bddb1d8fce39573b085222dea58c1
- https://github.com/honojs/middleware/pull/2040
- https://github.com/honojs/middleware/releases/tag/%40hono%2Foauth-providers%400.8.6
- https://github.com/honojs/middleware/security/advisories/GHSA-fm3f-ch8h-qw8q
This medium severity vulnerability with a CVSS score of 5.4 was published on 2026-08-31 via NVD.
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