VULNERABILITY INTELLIGENCE

CVE-2026-81888

CVSS score5.4 MEDIUM
EPSS probability0.19%
CISA KEVNot currently listed
Published2026-08-31
Last modified2026-09-09
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Description

@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.

Weakness classification

  • security-advisories@github.com: CWE-352

Primary references