CVE-2026-119141
MEDIUM
MEDIUM
Priority: 0.00
BB Relevance:
74/100
Published: 2026-10-29
Modified: 2026-10-29
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
AT:
None
VC:
None
VI:
None
VA:
Low
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 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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| bytecodealliance | wasmtime | 46.0.0 < 48.0.6 |