{"id":"CVE-2026-119131","revision":"3a0b6d5b59f1401f8cc186cbae251b10","records":[{"revision":"3a0b6d5b59f1401f8cc186cbae251b10","observedAt":"2026-10-29T17:12:12.367+00:00","statement":{"source":"cve-program","id":"CVE-2026-119131","aliases":[],"title":"Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Host Panic via wasi-http","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.","state":0,"publishedAt":"2026-10-29T15:58:12.765+00:00","modifiedAt":"2026-10-29T15:58:12.765+00:00","affected":[{"ecosystem":"Vendor product","name":"wasmtime","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"bytecodealliance\",\n                    \"product\": \"wasmtime\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:cargo/wasmtime-wasi-http\",\n                    \"versions\": [\n                        {\n                            \"version\": \"46.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"48.0.6\"\n                        },\n                        {\n                            \"version\": \"48.0.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"49.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"49.0.3\"\n                        },\n                        {\n                            \"version\": \"49.0.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-w36r-2hch-9xp9","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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119131","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-119131","identifiers":["CVE-2026-119131"]},"retained":false,"historicalAffected":[]}],"coverage":[]}