{"id":"CVE-2026-115387","aliases":["RUSTSEC-2026-0314","GHSA-j2g9-4prp-pf6h"],"title":"Guest can panic host through filesystem datetime overflow","summary":"Guest can panic host through filesystem datetime overflow","severity":"medium","cvss":6.2,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"wasmtime-wasi","product":"wasmtime-wasi","ecosystem":"rust","affected":["wasmtime-wasi >= 49.0.0, < 49.0.1"],"patched":["wasmtime-wasi 49.0.1"],"published":"2026-09-24","updated":"2026-10-23","sourceUpdated":"2026-10-23T10:55:51.038089492Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0314","references":[{"url":"https://crates.io/crates/wasmtime-wasi"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0314.html"},{"url":"https://github.com/bytecodealliance/wasmtime/pull/14403"},{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-j2g9-4prp-pf6h","label":"GitHub Security Advisory (GHSA-j2g9-4prp-pf6h)"},{"url":"https://www.vulncheck.com/advisories/wasmtime-before-36.0.16-37.0.0-before-48.0.3-and-49.0.0-before-49.0.1-host-panic-via-wasi-filesystem-timestamp-overflow","label":"VulnCheck Advisory: Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 Host Panic via WASI Filesystem Timestamp Overflow"}],"tags":["osv","rust","cve.org"],"cwe":["CWE-190"],"ingestedAt":"2026-10-22T22:00:50.405Z","slug":"CVE-2026-115387","body":"## Overview\n\nThis is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-j2g9-4prp-pf6h\nFor more information see the GitHub-hosted security advisory.\n\n## Affected packages\n\n- `wasmtime-wasi >= 49.0.0, < 49.0.1`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `wasmtime-wasi 49.0.1`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":34.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}