CVE-2026-81888
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product@hono/oauth-providers
PublishedAug 31, 2026
First seenAug 31, 2026
How to fix
Update
- @hono/oauth-providers0.8.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @hono/oauth-providersnpm | v < 0.8.6 | 0.8.6 |
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