CVE-2026-119140
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
42/100
Published: 2026-10-29
Modified: 2026-11-03
First seen: 2026-10-29
Status: active
Attack Surface
Network
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
Low
UI:
Passive
AT:
Present
VC:
None
VI:
None
VA:
High
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 components to panic the host via thread.yield in start functions. Attackers can supply a component whose start function calls an async-lowered import then thread.yield, causing an undisposed fiber drop that crashes embedders.
Weakness Classification (1)
Affected Software (3)
| Vendor | Product | Version |
|---|---|---|
| bytecodealliance | wasmtime | 46.0.0 < 48.0.6 |
| bytecodealliance | wasmtime | 46.0.0 < 48.0.6 |
| bytecodealliance | wasmtime | 49.0.0 < 49.0.3 |