LOWCVSS v3.1 3.7Vulnerability
CVE-2026-121440
Wasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 fails to check forwarded trailers against the WasiHttpHooks::is_forbidden_header hook in wasi-http p3. WASIp3 guests can forward a request or response body so its trailers skip embedder-customized forbidden header filtering, undermining header restrictions the embedder intended.
Properties
- Severity
- LOW
- Nvd fetched at
- 2026-11-03T17:20:13.885968+00:00
- Cvss severity
- LOW
- Cvss score
- 3.7
- Retrieved at
- 2026-11-03T17:21:18+00:00
- Score
- 3.7
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-121440
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- First seen by Signal
- 2026-11-03T17:21:18+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- Published at
- 2026-11-03T15:17:35.707
- Last modified
- 2026-11-03T15:17:35.863
Related Entities (1)
HAS_WEAKNESS (1)
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