{"action":"Upgrade wasmtime to 36.0.19 (36.x) or 43.0.0 (43.x) or later.","affected":[{"fixed":"36.0.19","introduced":"0"},{"fixed":"43.0.0","introduced":"37.0.0"}],"component":"wasmtime","cve_ids":[],"ecosystem":"crates.io","exploited":false,"fixed_versions":["36.0.19","43.0.0"],"ghsa_id":"GHSA-897f-g5gm-fmxm","id":"tcs_01M5NDPQ9SN8A53WKK9TKSGY70","modified_at":"2026-10-23T22:15:04.434177428Z","published_at":"2026-10-23T22:02:20Z","references":["https://osv.dev/vulnerability/GHSA-897f-g5gm-fmxm","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-897f-g5gm-fmxm","https://github.com/bytecodealliance/wasmtime/pull/12613","https://github.com/bytecodealliance/wasmtime/pull/14818","https://github.com/bytecodealliance/wasmtime/commit/ba8f7d70caa1825b7f64fa75cd9d03f4a438dae0","https://github.com/bytecodealliance/wasmtime/commit/f517bd6e890c7c1291ab9fe05d8cc0c9f11e56aa","https://github.com/bytecodealliance/wasmtime","https://github.com/bytecodealliance/wasmtime/releases/tag/v36.0.19","https://github.com/bytecodealliance/wasmtime/releases/tag/v43.0.0","https://rustsec.org/advisories/RUSTSEC-2026-0380.html"],"severity":{"label":"critical","score":9.9},"sources":[{"source":"osv","source_id":"GHSA-897f-g5gm-fmxm","url":"https://osv.dev/vulnerability/GHSA-897f-g5gm-fmxm"}],"summary":"Wasmtime: Bit-packing in Cranelift compiler causes silent overflow and miscompilation"}