{"id":"CVE-2026-115386","published":"2026-10-22T19:17:45.857","lastModified":"2026-10-23T15:17:29.220","description":"Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains an information disclosure vulnerability in the WASIp1 fd_readdir implementation that copies uninitialized struct padding into guest memory. Guests with a preopened directory can list entries to receive three bytes of leftover host stack or heap memory per directory entry.","cvssScore":2.6,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N","cwes":["CWE-908"],"vendors":[],"products":[],"references":[{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-96f6-r43r-8c24","tags":[]},{"url":"https://www.vulncheck.com/advisories/wasmtime-before-36.0.17-37.0.0-before-48.0.4-and-49.0.0-before-49.0.2-memory-disclosure-via-fd-readdir","tags":[]}],"exploitRefs":[{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-96f6-r43r-8c24","tags":[]}],"hasPoc":true,"ai":null}