{"action":"Upgrade wasmtime to 24.0.6 or later.","affected":[{"fixed":"24.0.6","introduced":"0"},{"fixed":"36.0.6","introduced":"25.0.0"},{"fixed":"40.0.4","introduced":"37.0.0"}],"component":"wasmtime","cve_ids":["CVE-2026-27572"],"ecosystem":"crates.io","epss":0.00519,"exploited":false,"fixed_versions":["24.0.6","36.0.6","40.0.4"],"ghsa_id":"GHSA-243v-98vx-264h","id":"tcs_01M5KEQZVF35M3JTXCHDCX6343","modified_at":"2026-09-10T03:50:33.728858201Z","published_at":"2026-02-24T21:08:06Z","references":["https://osv.dev/vulnerability/GHSA-243v-98vx-264h","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-243v-98vx-264h","https://nvd.nist.gov/vuln/detail/CVE-2026-27572","https://github.com/bytecodealliance/wasmtime/commit/301dc7162cca51def19131019af1187f45901c0a","https://docs.rs/http/1.4.0/http/header/#limitations","https://github.com/bytecodealliance/wasmtime","https://github.com/bytecodealliance/wasmtime/releases/tag/v24.0.6","https://github.com/bytecodealliance/wasmtime/releases/tag/v36.0.6","https://github.com/bytecodealliance/wasmtime/releases/tag/v40.0.4","https://github.com/bytecodealliance/wasmtime/releases/tag/v41.0.4","https://rustsec.org/advisories/RUSTSEC-2026-0021.html"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-243v-98vx-264h","url":"https://osv.dev/vulnerability/GHSA-243v-98vx-264h"},{"source":"nvd","source_id":"CVE-2026-27572","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27572"}],"summary":"Wasmtime can panic when adding excessive fields to a `wasi:http/types.fields` instance"}