LOWCVSS v3.1 2.0Vulnerability
CVE-2026-126409
Wasmtime 47.0.0 before 48.0.8, 49.0.0 before 49.0.5, and 50.0.0 before 50.0.1 contains a cross-engine type confusion vulnerability because StructType::with_finality_and_supertype does not validate that the supplied supertype belongs to the same Engine. Embedders using multiple engines that create a GC struct type with another engine's supertype can trigger runtime panics or GC heap corruption, causing denial of service; guest WebAssembly cannot trigger it.
Properties
- Severity
- LOW
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00271
- Cvss severity
- LOW
- Cvss score
- 2
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 2
- Cvss version
- 3.1
- Cve id
- CVE-2026-126409
- Cvss vector
- CVSS:3.1/AV:N/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:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L
- Published at
- 2026-11-13T10:17:46.013
- Last modified
- 2026-11-13T10:17:46.150
- Epss percentile
- 0.19519
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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