@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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-fm3f-ch8h-qw8q @hono/oauth-providers: OAuth state check fails open on omitted state, enabling login CSRF and forced account linking
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 01 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Honojs
Honojs @hono/oauth-providers
Vendors & Products Honojs
Honojs @hono/oauth-providers

Mon, 31 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title @hono/oauth-providers: OAuth state check fails open on omitted state, enabling login CSRF and forced account linking
Weaknesses CWE-1275
CWE-352
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-01T14:59:01.902Z

Reserved: 2026-08-27T17:48:42.123Z

Link: CVE-2026-81888

cve-icon Vulnrichment

Updated: 2026-09-01T14:14:35.479Z

cve-icon NVD

Status : Received

Published: 2026-08-31T21:17:52.317

Modified: 2026-09-01T15:17:31.113

Link: CVE-2026-81888

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-01T14:16:30Z

Weaknesses