{"id":"CVE-2026-115384","aliases":["GHSA-32h6-97mm-8q3c","RUSTSEC-2026-0327"],"url":"https://o3.security/vulnerability/CVE-2026-115384","summary":"Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 Stack Buffer Overflow","details":"Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a stack buffer overflow vulnerability that allows malicious guests to write ~16KB to the native stack via unvalidated async callback result types. Attackers can supply components with mistyped component-model-async callback functions to overwrite return addresses, crashing the host or escaping the sandbox.","published":"2026-10-22T19:13:51.422Z","modified":"2026-10-23T10:55:43.476101245Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115384.json"},{"type":"ADVISORY","url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-32h6-97mm-8q3c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115384"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/wasmtime-39.0.0-before-48.0.4-and-49.0.0-before-49.0.2-stack-buffer-overflow"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-23T10:55:43.476101245Z"}}