LOWCVSS v3.1 1.8Vulnerability
CVE-2026-126408
Wasmtime 47.0.0 before 48.0.8, 49.0.0 before 49.0.5, and 50.0.0 before 50.0.1 contains an insufficient type-check in the TypedFunc embedder API for I31, Option<I31>, and Option<NoneRef> parameter or result types, reaching an unreachable!() path. A malicious guest module exporting a function that uses another anyref-hierarchy type can panic the host embedding, causing denial of service.
Properties
- Severity
- LOW
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00178
- Cvss severity
- LOW
- Cvss score
- 1.8
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 1.8
- Cvss version
- 3.1
- Cve id
- CVE-2026-126408
- Cvss vector
- CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L
- Published at
- 2026-11-13T10:17:45.823
- Last modified
- 2026-11-13T21:17:43.083
- Epss percentile
- 0.07438
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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