CVE Explorer

CVE-2026-47676

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, app.mount() strips the mount prefix from the incoming request path using the raw URL pathname, while route matching is performed against the percent-decoded path. This inconsistency causes the prefix to be stripped at the wrong position when the path contains percent-encoded multi-byte characters, resulting in the mounted sub-application receiving an incorrect path. This vulnerability is fixed

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:96ca5695b3c16faae50792e7f601233afdfbd73331c36676493241333909b0fd

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:da7d94a2d4ef93a35383ea20675aa5e948c517cb43d889f2b4a5c8415b8e69a8 · sha256:6074f1e9c0f2d2a0… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-444","description":"CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:da7d94a2d4ef93a35383ea20675aa5e948c517cb43d889f2b4a5c8415b8e69a8 · sha256:6074f1e9c0f2d2a0… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion

{"product":"hono","vendor":"honojs","versions":[{"status":"affected","version":"< 4.12.21"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:da7d94a2d4ef93a35383ea20675aa5e948c517cb43d889f2b4a5c8415b8e69a8 · sha256:6074f1e9c0f2d2a0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:da7d94a2d4ef93a35383ea20675aa5e948c517cb43d889f2b4a5c8415b8e69a8 · sha256:6074f1e9c0f2d2a0… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:da7d94a2d4ef93a35383ea20675aa5e948c517cb43d889f2b4a5c8415b8e69a8 · sha256:6074f1e9c0f2d2a0… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-444","description":"CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:da7d94a2d4ef93a35383ea20675aa5e948c517cb43d889f2b4a5c8415b8e69a8 · sha256:6074f1e9c0f2d2a0… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/honojs/hono/security/advisories/GHSA-2gcr-mfcq-wcc3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/honojs/hono/security/advisories/GHSA-2gcr-mfcq-wcc3"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:da7d94a2d4ef93a35383ea20675aa5e948c517cb43d889f2b4a5c8415b8e69a8 · sha256:6074f1e9c0f2d2a0… · /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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