{"cve":"CVE-2026-115382","nvd":{"published":"2026-10-22T19:17:45.227","modified":"2026-10-23T15:17:29.057","status":"Deferred","description":"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.","cvss_v4":{"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","score":5.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H","score":4.8},"cwes":["CWE-1284"],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-w4qr-p94g-mjhv","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"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:28.036610720+00:00"},"epss":{"cve":"CVE-2026-115382","score":0.00276,"percentile":0.19862,"date":"2026-10-25"},"kev":null,"osv":[{"id":"RUSTSEC-2026-0320","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0320","summary":"Wasmtime wasi:http implementation panics with a zero timeout supplied","modified":"2026-10-24T06:25:41Z","packages":[{"ecosystem":"crates.io","name":"wasmtime-wasi-http","purl":"pkg:cargo/wasmtime-wasi-http","ranges":[">=46.0.0 <48.0.4",">=49.0.0 <49.0.2"],"fixed":["48.0.4","49.0.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}