Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.11.4, there is a flaw in Hono’s JWK/JWKS JWT verification middleware allowed the algorithm specified in the JWT header to influence signature verification when the selected JWK did not explicitly define an algorithm. This could enable JWT algorithm confusion and, in certain configurations, allow forged tokens to be accepted. The JWK/JWKS JWT verification middleware has been updated to require an explicit allowlist of asymmetric algorithms when verifying tokens. The middleware no longer derives the verification algorithm from untrusted JWT header values. This vulnerability is fixed in 4.11.4.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
| Date | Total | Labels |
|---|
| 2026-06-27 | 1 | Patch1 |
| 2026-07-02 | 1 | General1 |
ちなみに今なので言える話だが、自分が修正した CVE-2026-22818 悪用しようとするとWebCrypto の importKey()でRSA形式のJWKをHMAC鍵でないと判定してエラーを返すので、悪用は不可能だったりする 塞いでおいた方が良いことには代わりないけど https://zenn.dev/calloc134/articles/hono-jwt-jwk-alg-confusion
Post summary
The post discusses CVE‑2026‑22818, a JWK algorithm confusion in WebCrypto importKey; the author fixed it, notes that exploitation is blocked by an import error, and links to an article detailing the fix.
用法理解をより深く理解し、より優れた解決策を選べるのか。 実例から学ぶ。 => Hono JWK Middleware - CVE-2026-22818 #ID沼入口
Post summary
The short Japanese text only mentions the CVE-2026-22818 identifier without providing any additional technical or operational details.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | hono | hono | - | node.js | - |