{"id":"EUVD-2026-91765","revision":"59ead8549eb0456387eb4fef07686a61","records":[{"revision":"59ead8549eb0456387eb4fef07686a61","observedAt":"2026-11-03T02:58:51.361+00:00","statement":{"source":"euvd","id":"EUVD-2026-91765","aliases":["CVE-2026-104855","GHSA-2hw9-mc66-jc2q"],"title":"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…","description":"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 mutates a Store in Store::epoch_deadline_callback or continues using a Store after cancellation or a trap. A cancelled non-nullable table growth can leave null elements, linear-memory growth during memory.copy can invalidate retained raw pointers, and callback-triggered garbage collection during array.copy can invalidate GC pointers, resulting in a crash, invalid memory access, or GC heap corruption. Embeddings whose callbacks only access the host data in Store<T>, and embeddings that discard a Store after timeout or epoch deadline, are not affected. This issue is fixed in versions 46.0.2 and 47.0.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","score":2,"severity":null}],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-2hw9-mc66-jc2q","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/commit/3ebfbe5af4927c157d6fcaca42b8dbb6d17b73fb","https://github.com/bytecodealliance/wasmtime/commit/99b0bc39d447317a4102c056081c83a9a84a46e0","https://github.com/bytecodealliance/wasmtime/commit/a3eb27af01ba5a30320a90ea1405059cdfedd353","https://github.com/bytecodealliance/wasmtime/releases/tag/v46.0.2","https://github.com/bytecodealliance/wasmtime/releases/tag/v47.0.3"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-91765","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 2, 2026, 5:37:50 PM","dateUpdated":"Oct 6, 2026, 4:38:35 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-91765","identifiers":["EUVD-2026-91765","CVE-2026-104855","GHSA-2hw9-mc66-jc2q"]},"retained":false,"historicalAffected":[]}],"coverage":[]}