CVE-2026-119138
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Panic After Trap
- State
- Published
- Severity
- 5.9 Medium
- Published
- Oct 29, 2026
- Updated
- Oct 29, 2026
- Reserved
- Oct 29, 2026
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 pending calls to trigger an assertion failure after a trap poisons the Store. Attackers supplying misbehaving guest code can cause a trap and let earlier calls proceed, crashing embedders that continue using the inconsistent Store.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.9 Medium | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 4.8 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-617 Reachable Assertion
Affected Products
| Product | Versions |
|---|---|
wasmtimebytecodealliance |
|
References
- GitHub Security Advisory (GHSA-hmwq-g22x-qjw5)vendor-advisory
- VulnCheck Advisory: Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Panic After Trapthird-party-advisory
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