{"answers":{"affected":"1 open source package ship an affected version, including wasmtime.","exploited":"There is no known exploitation of CVE-2026-115393 in the wild and no public exploit code.","fix":"Upgrade wasmtime to a fixed version for your release line: 24.0.12, 36.0.13, 46.0.2 or 47.0.3.","what":"CVE-2026-115393 is a low-severity vulnerability in bytecodealliance wasmtime, published on 22 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-115393 and fix it if it is affected.\n\nWhat it is: CVE-2026-115393 is a low-severity vulnerability in bytecodealliance wasmtime, published on 22 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-115393 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- wasmtime (crates.io): affected from 0.0.0-0; fixed in 24.0.12, 36.0.13, 46.0.2, 47.0.3\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-2026-115393/ (Markdown: https://insights.sbomify.com/CVE-2026-115393/index.md)","id":"CVE-2026-115393","markdown":"https://insights.sbomify.com/CVE-2026-115393/index.md","name":"CVE-2026-115393","record":{"aliases":["DEBIAN-CVE-2026-115393","GHSA-hgjw-h833-99q9","GHSA-hm3j-7f84-9x3r","RUSTSEC-2026-0222","UBUNTU-CVE-2026-115393"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":1,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"Wasmtime before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 contains a type confusion vulnerability because several Store APIs fail to validate that objects belong to the Store's Engine. Embedders mixing objects between Engines via Instance::new, StructRefPre::new, or Tag::new can trigger trampoline signature mismatches causing out-of-bounds stack writes, GC heap corruption, or panics.","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 before 24.0.12, 25.0.0 before 36.0.13, 37.0.0 before 46.0.2, and 47.0.0 before 47.0.3 contains a type confusion vulnerability becau","id":"CVE-2026-115393","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":"Ghidra through 12.2 Denial of Service via BinaryField Memory Allocation","id":"CVE-2026-115394"},"packages":[{"ecosystem":"crates.io","fixed":["24.0.12","36.0.13","46.0.2","47.0.3"],"introduced":["0.0.0-0","25.0.0","37.0.0","47.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"RUSTSEC-2026-0222"}],"prev":{"headline":"Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 allows a filesystem sandbox escape in wasmtim","id":"CVE-2026-115392"},"products":["wasmtime"],"published":"2026-10-22","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["bytecodealliance"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-115393/"}