Vulnerabilities

Wasmtime from 49.0.0 before 49.0.3 contains a denial-of-service vulnerability that allows a WebAssembly guest to trigger a host panic by transcoding…

Wasmtime from 49.0.0 before 49.0.3 contains a denial-of-service vulnerability that allows a WebAssembly guest to trigger a host panic by transcoding overlapping strings in fused adapters. Attackers can make a same-instance component-to-component call transferring a string whose source and destination alias each other, crashing the host instead of raising a trap.

Read at NIST National Vulnerability Database (CVE API 2.0)

Vendor

Bytecodealliance

Product

wasmtime

CVSS v3.1

4.8 AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

Weakness

CWE-617

NVD status

Deferred

• NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
• CVE-2026-119132 on this site · NVD · CVE.org · Vulnpedia

Other items that share a CVE or were clustered with this one.

1. 3
   CVE NVD 7d ago

   Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows guest code to trigger a host panic…

   CVSS 4.8 CVE-2026-119143 Bytecodealliance