{"affected":[{"defaultStatus":"unaffected","ecosystem":"cargo","packageName":"wasmtime-wasi-http","product":"wasmtime","source":"CNA: VulnCheck","vendor":"bytecodealliance","versions":[{"lessThan":"48.0.6","status":"affected","version":"46.0.0","versionType":"semver"},{"status":"unaffected","version":"48.0.6","versionType":"semver"},{"lessThan":"49.0.3","status":"affected","version":"49.0.0","versionType":"semver"},{"status":"unaffected","version":"49.0.3","versionType":"semver"}]}],"cveId":"CVE-2026-119131","cwes":["CWE-190"],"description":"Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability in wasmtime-wasi-http that lets guests crash the host by sending long request URLs. Guests can use set-path-with-query with a '?' after byte 65535, overflowing a u16 index in the http crate and triggering a host panic.","epss":{"date":"2026-11-04","percentile":0.23353,"score":0.00304},"exploits":[],"kev":null,"metrics":[{"score":6.9,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},{"score":6.9,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":5.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}],"modifiedAt":1793758637110,"publishedAt":1793289492765,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-w36r-2hch-9xp9"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.6-and-49.0.0-before-49.0.3-host-panic-via-wasi-http"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-w36r-2hch-9xp9"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.6-and-49.0.0-before-49.0.3-host-panic-via-wasi-http"}],"remediation":[],"revision":"05f15c69cea22497c8390f5d83834a0c62ed3cc45d481336c8a96d9285fc761c","sources":[{"modifiedAt":1793755633719,"name":"CNA: VulnCheck","retrievedAt":1793758134476,"url":"https://www.cve.org/CVERecord?id=CVE-2026-119131"},{"modifiedAt":1793758637110,"name":"NVD","retrievedAt":1793772995383,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119131"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793858202704,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-119131"}],"ssvc":{"assessedAt":1793755624687,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Host Panic via wasi-http","updatedAt":1793858202704}