CVE-2026-104855Published
Wasmtime is a runtime for WebAssembly. From 46.0.0 until 46.0.2 and 47.0.3, fuel and epoch preemption checks inside bulk operations including memory.copy, table.grow, and array.copy can expose invalid intermediate state when an embedder mut…
Exact source revision recorded 25 Oct 2026 04:17:29 UTC. It does not establish the source's current position. Latest evidence.
Explicit identifiers and source references
These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.
CVE-2026-104855 · Microsoft / collected KEV context
nvd · CVE-2026-104855
- https://github.com/bytecodealliance/wasmtime/commit/3ebfbe5af4927c157d6fcaca42b8dbb6d17b73fb
- https://github.com/bytecodealliance/wasmtime/commit/99b0bc39d447317a4102c056081c83a9a84a46e0
- https://github.com/bytecodealliance/wasmtime/commit/a3eb27af01ba5a30320a90ea1405059cdfedd353
- https://github.com/bytecodealliance/wasmtime/pull/14041
- https://github.com/bytecodealliance/wasmtime/pull/14043
- https://github.com/bytecodealliance/wasmtime/pull/14045
- https://github.com/bytecodealliance/wasmtime/releases/tag/v46.0.2
- https://github.com/bytecodealliance/wasmtime/releases/tag/v47.0.3
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-2hw9-mc66-jc2q
Current operational correlations are not mixed into this historical source record. Open latest evidence to discover current connections.