Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a missing GC rooting vulnerability that leaves references live across try_call unrooted when compiling Wasm modules. Attackers can supply Wasm modules whose callee triggers garbage collection, leaving stale or dangling references that cause GC heap corruption or incorrect execution.
Metrics
Affected Vendors & Products
References
History
Fri, 23 Oct 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a missing GC rooting vulnerability that leaves references live across try_call unrooted when compiling Wasm modules. Attackers can supply Wasm modules whose callee triggers garbage collection, leaving stale or dangling references that cause GC heap corruption or incorrect execution. | |
| Title | Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via try_call | |
| First Time appeared |
Bytecodealliance
Bytecodealliance wasmtime |
|
| Weaknesses | CWE-416 CWE-825 |
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| CPEs | cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Bytecodealliance
Bytecodealliance wasmtime |
|
| References |
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| Metrics |
threat_severity
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cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-22T19:13:47.737Z
Updated: 2026-10-22T19:13:47.737Z
Reserved: 2026-10-22T11:25:27.610Z
Link: CVE-2026-115379
No data.
Status : Deferred
Published: 2026-10-22T19:17:44.747
Modified: 2026-10-22T19:17:44.860
Link: CVE-2026-115379