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 `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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.4
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- EPSS probability
- 0.15%
- CWE
- CWE-352, CWE-1275
- Published
- 2026-08-31
- Last modified
- 2026-09-01
Affected products
- honojs @hono/oauth-providers
Weakness type
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