CVE-2026-119143
MEDIUM
MEDIUM
Priority: 0.00
BB Relevance:
52/100
Published: 2026-10-29
Modified: 2026-10-29
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
CVSS Vector Breakdown
AV:
Network
AC:
Low
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 guest code to trigger a host panic through out-of-bounds zero-length stream operations. Malicious guests can perform zero-length component model stream reads or writes with unvalidated addresses, causing Direct{Source,Destination}::remaining to panic and crash WASIp3 embedders.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| bytecodealliance | wasmtime | 46.0.0 < 48.0.6 |
| bytecodealliance | wasmtime | 49.0.0 < 49.0.3 |