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CVE-2026-22818

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 expl
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:00d28942bdbd87614ecf03d733cc066fb211a630e950a9aa66c6a1d77a1ddcb4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"hono","vendor":"honojs","versions":[{"status":"affected","version":"< 4.11.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:59e2d7b4295d84c8abfed6480a9648a4327e7479bf1f9f0490835cf5b159b801 · sha256:40788be14524c33a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:59e2d7b4295d84c8abfed6480a9648a4327e7479bf1f9f0490835cf5b159b801 · sha256:40788be14524c33a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-347","description":"CWE-347: Improper Verification of Cryptographic Signature","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:59e2d7b4295d84c8abfed6480a9648a4327e7479bf1f9f0490835cf5b159b801 · sha256:40788be14524c33a… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/honojs/hono/commit/190f6e28e2ca85ce3d1f2f54db1310f5f3eab134","tags":["x_refsource_MISC"],"url":"https://github.com/honojs/hono/commit/190f6e28e2ca85ce3d1f2f54db1310f5f3eab134"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:59e2d7b4295d84c8abfed6480a9648a4327e7479bf1f9f0490835cf5b159b801 · sha256:40788be14524c33a… · /containers/cna/references/1
{"name":"https://github.com/honojs/hono/security/advisories/GHSA-3vhc-576x-3qv4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/honojs/hono/security/advisories/GHSA-3vhc-576x-3qv4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:59e2d7b4295d84c8abfed6480a9648a4327e7479bf1f9f0490835cf5b159b801 · sha256:40788be14524c33a… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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