{"id":"CVE-2026-115382","summary":"Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 wasi:http Zero Timeout Panic DoS","details":"Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a denial-of-service vulnerability in its wasi:http implementation that allows guests to panic the host. Guests can specify a zero between-bytes-timeout request option, which is forwarded directly to a Tokio API that panics, crashing the host embedding.","aliases":["GHSA-w4qr-p94g-mjhv","RUSTSEC-2026-0320"],"modified":"2026-10-28T02:31:01.731308136Z","published":"2026-10-22T19:13:49.956Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115382.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-1284"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115382.json"},{"type":"ADVISORY","url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-w4qr-p94g-mjhv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115382"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.4-and-49.0.0-before-49.0.2-wasi-http-zero-timeout-panic-dos"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bytecodealliance/wasmtime","events":[{"introduced":"423be7a4e4d30bb377c836d317521d1eb874e157"},{"fixed":"d02ffd202850007ea953224f589a569e8830eb6c"},{"introduced":"17830bd3c0331d920a8aa38846eebc4d46d98c23"},{"fixed":"3c8a3e79aa3188a1a12b3aebbaa097abccceac92"}],"database_specific":{"extracted_events":[{"strategy":"StandardRange","range":[{"introduced":"46.0.0"},{"fixed":"48.0.4"}],"source":"AFFECTED_FIELD"},{"range":[{"introduced":"49.0.0"},{"fixed":"49.0.2"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]}}],"versions":["v49.0.1","v49.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-115382.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"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"}]}