{"answers":{"affected":"1 open source package ship an affected version, including wasmtime.","exploited":"There is no known exploitation of CVE-2026-119143 in the wild and no public exploit code.","fix":"Upgrade wasmtime to a fixed version for your release line: 48.0.6 or 49.0.3.","what":"CVE-2026-119143 is a medium-severity vulnerability in bytecodealliance wasmtime, published on 29 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-119143 and fix it if it is affected.\n\nWhat it is: CVE-2026-119143 is a medium-severity vulnerability in bytecodealliance wasmtime, published on 29 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-119143 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- wasmtime (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-2026-119143/ (Markdown: https://insights.sbomify.com/CVE-2026-119143/index.md)","id":"CVE-2026-119143","markdown":"https://insights.sbomify.com/CVE-2026-119143/index.md","name":"CVE-2026-119143","record":{"aliases":["GHSA-368p-492j-h227","GHSA-93g3-36p8-x2gc","RUSTSEC-2026-0357"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-129","name":"Improper Validation of Array Index"}],"description":"Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows guest code to trigger a host panic through out-of-bounds zero-length stream operations. Malicious guests can perform zero-length component model stream reads or writes with unvalidated addresses, causing Direct{Source,Destination}::remaining to panic and crash WASIp3 embedders.","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 Panic via Zero-Length Stream Writes","id":"CVE-2026-119143","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":"Frappe Framework before 15.111.0 and 16.x before 16.21.0 Server-Side Template Injection via Message Fields","id":"CVE-2026-119144"},"packages":[{"ecosystem":"crates.io","fixed":["48.0.6","49.0.3"],"introduced":["46.0.0","49.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"RUSTSEC-2026-0357"}],"prev":{"headline":"Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 Host Panic via call_async Drop","id":"CVE-2026-119142"},"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-2026-119143/"}