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…
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.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Bytecodealliance
- Product
- wasmtime
- CVSS v3.1
- 5.3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Exploitation
- SSVC none, automatable yes, impact partial
- Weakness
- CWE-1265
- NVD status
- Deferred
Why it ranks 7 (Routine)
- CVSS v3.1 5.3 medium
- SSVC: automatable
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-119141 on this site · NVD · CVE.org · Vulnpedia
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