Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 Cross-Engine Type Confusion
Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 contains a type confusion vulnerability because several Store APIs fail to validate that objects belong to the Store's Engine. Embedders mixing objects between Engines via Instance::new, StructRefPre::new, or Tag::new can trigger trampoline signature mismatches causing out-of-bounds stack writes, GC heap corruption, or panics.
CVE-2026-115393
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-115393
wasmtime
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "bytecodealliance",
"product": "wasmtime",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "24.0.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "24.0.12",
"versionType": "semver"
},
{
"status": "affected",
"version": "25.0.0",
"lessThan": "36.0.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "36.0.13",
"versionType": "semver"
},
{
"status": "affected",
"version": "37.0.0",
"lessThan": "46.0.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "46.0.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "47.0.0",
"lessThan": "47.0.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "47.0.3",
"versionType": "semver"
}
],
"packageURL": "pkg:cargo/wasmtime",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-115393
Source reference:
/cveMetadata/cveId
Publisher severity
low
Source reference: /containers/cna/metrics
- Event
- #52346 · Revision 1
- Added to Heist Feed
- Publisher date