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.
Published:Aug 31, 2026
Last Modified:Sep 1, 2026
EPS:Aug 31, 2026
EPSS Score:0.00149
CVSS Score:5.4
Affected Products
Vendor
Product
Action
Vendor
Honojs
Product
@hono/oauth-providers
Honojs
@hono/oauth-providers
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
