MEDIUMCVSS v3.1 6.4Vulnerability
CVE-2026-126410
Wasmtime's wasmtime-wasi crate 48.0.0 before 48.0.8, 49.0.0 before 49.0.5, and 50.0.0 before 50.0.1 contains a time-of-check/time-of-use race in the wasip3 wasi:sockets udp-socket host implementation that lets guests bypass socket_addr_check send restrictions. A malicious guest can race udp-socket.send against udp-socket.connect to deliver attacker-controlled datagrams to addresses the policy permits only for receiving.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00221
- Cvss score
- 6.4
- Cvss severity
- MEDIUM
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Score
- 6.4
- Last source
- FIRST EPSS
- Cvss version
- 3.1
- Cve id
- CVE-2026-126410
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Published at
- 2026-11-13T10:17:46.200
- Last modified
- 2026-11-13T10:17:46.330
- Epss percentile
- 0.12827
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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