Description


Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows malicious Wasm modules to panic the host because the may_leave flag is not cleared during realloc. Attackers can call into the host from realloc while lowering stream or future results, such as cancelling the active read or re-waiting a waitable-set, crashing the host.

Related CPE's


Could not find any relations

Weaknesses



CWE-1265

CVSS impact metrics


CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

5.3 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-29T16:18:07.670Z

14 hours ago

Last modified

2026-10-29T17:18:07.937Z

13 hours ago