CVE-2026-119136RUSTSEC-2026-0362GHSA-VCG5-Q8M5-8379
Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Async-Entrypoint Enforcement Bypass
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 48.0.6, 49.0.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains insufficient checks in Store when mixing async-style and sync-style WebAssembly calls. Embedders re-entering WebAssembly via sync APIs from host functions called asynchronously can trigger runtime panics or unsound cross-thread movement of !Send host variables.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- bytecodealliance wasmtime
From 42.0.0 · fixed in 48.0.6; From 49.0.0 · fixed in 49.0.3
- wasmtimecrates.io
From 42.0.0 · fixed in 48.0.6; From 49.0.0 · fixed in 49.0.3