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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-31 21:17

Updated : 2026-09-09 21:09

NVD link : CVE-2026-81888

Mitre link : CVE-2026-81888

CVE.ORG link : CVE-2026-81888

JSON object : View

Products Affected

No product.

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

CWE-1275

Sensitive Cookie with Improper SameSite Attribute

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