MEDIUMCVSS v3.1 4.8Vulnerability
CVE-2026-126407
Wasmtime before 36.0.20, 37.0.0 before 48.0.8, 49.0.0 before 49.0.5, and 50.0.0 before 50.0.1 allocates untracked host memory when a component receives a borrow of a resource it defines itself, bypassing the per-store handle limit. A malicious guest component can repeatedly transfer such borrowed resources to consume arbitrary host memory, causing denial of service.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00367
- Cvss score
- 4.8
- Cvss severity
- MEDIUM
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Score
- 4.8
- Last source
- FIRST EPSS
- Cvss version
- 3.1
- Cve id
- CVE-2026-126407
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H
- Published at
- 2026-11-13T10:17:45.637
- Last modified
- 2026-11-13T16:18:23.423
- Epss percentile
- 0.30972
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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