{"answers":{"affected":"1 open source package ship an affected version, including wasmtime-wasi-http.","exploited":"There is no known exploitation of CVE-2026-119131 in the wild and no public exploit code.","fix":"Upgrade wasmtime-wasi-http to a fixed version for your release line: 48.0.6 or 49.0.3.","what":"CVE-2026-119131 is a medium-severity vulnerability in bytecodealliance wasmtime, published on 29 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-119131 and fix it if it is affected.\n\nWhat it is: CVE-2026-119131 is a medium-severity vulnerability in bytecodealliance wasmtime, published on 29 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-119131 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- wasmtime-wasi-http (crates.io): affected from 46.0.0; fixed in 48.0.6, 49.0.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-119131/ (Markdown: https://insights.sbomify.com/CVE-2026-119131/index.md)","id":"CVE-2026-119131","markdown":"https://insights.sbomify.com/CVE-2026-119131/index.md","name":"CVE-2026-119131","record":{"aliases":["GHSA-9vvr-fpgq-p9gc","GHSA-w36r-2hch-9xp9","RUSTSEC-2026-0351"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","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"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"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.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Host Panic via wasi-http","id":"CVE-2026-119131","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":2,"next":{"headline":"Wasmtime 49.0.0 before 49.0.3 Host Panic via Overlapping String Transcode in Fused Adapter","id":"CVE-2026-119132"},"packages":[{"ecosystem":"crates.io","fixed":["48.0.6","49.0.3"],"introduced":["46.0.0","49.0.0"],"last_affected":[],"package":"wasmtime-wasi-http","purl":"pkg:cargo/wasmtime-wasi-http","source":"RUSTSEC-2026-0351"}],"prev":{"headline":"Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 HTTP Request Target Smuggling","id":"CVE-2026-119130"},"products":["wasmtime"],"published":"2026-10-29","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-29","vendors":["bytecodealliance"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-119131/"}