{"id":"CVE-2026-118688","aliases":["RUSTSEC-2026-0352","GHSA-m9f7-9w4p-gv38"],"title":"Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 Sandbox Escape via Symlink Rename","titleSource":"VulnCheck","descriptionSource":"OSV","description":"This is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m9f7-9w4p-gv38\nFor more information see the GitHub-hosted security advisory.","severity":"high","score":8.8,"published":"2026-10-14T12:00:00.000Z","modified":"2026-10-29T10:56:01.834Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"crates.io","name":"wasmtime-wasi","sources":[{"name":"OSV · RUSTSEC-2026-0352","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0352"}],"ranges":[{"events":[{"introduced":"0.0.0-0"},{"fixed":"36.0.18"},{"introduced":"37.0.0"},{"fixed":"48.0.6"},{"introduced":"49.0.0"},{"fixed":"49.0.3"}],"type":"SEMVER"}],"versions":[],"fixed":["36.0.18","48.0.6","49.0.3"]}],"sourceAffected":[],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m9f7-9w4p-gv38","https://www.vulncheck.com/advisories/wasmtime-before-36.0.18-37.0.0-before-48.0.6-and-49.0.0-before-49.0.3-sandbox-escape-via-symlink-rename","https://crates.io/crates/wasmtime-wasi","https://rustsec.org/advisories/RUSTSEC-2026-0352.html","https://github.com/bytecodealliance/wasmtime/pull/14729"],"sources":[{"name":"CVE","id":"CVE-2026-118688","modified":"2026-10-28T18:59:56.965Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-118688"},{"name":"OSV","id":"RUSTSEC-2026-0352","modified":"2026-10-29T10:56:01.834981839Z","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0352"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L","score":8.8},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L","score":7.9},{"source":"OSV","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L","score":8.8}],"cve":{"records":[{"id":"CVE-2026-118688","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-28T17:31:29.498Z","published":"2026-10-28T18:59:56.965Z","modified":"2026-10-28T18:59:56.965Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-28T18:59:56.965Z"}],"references":[{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m9f7-9w4p-gv38","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/wasmtime-before-36.0.18-37.0.0-before-48.0.6-and-49.0.0-before-49.0.3-sandbox-escape-via-symlink-rename","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-61","description":"UNIX Symbolic Link (Symlink) Following","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*","versionEndExcluding":"36.0.18"},{"vulnerable":true,"criteria":"cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*","versionStartIncluding":"37.0.0","versionEndExcluding":"48.0.6"},{"vulnerable":true,"criteria":"cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*","versionStartIncluding":"49.0.0","versionEndExcluding":"49.0.3"}]}]}]}],"prioritization":[]},"products":[{"vendor":"bytecodealliance","name":"wasmtime","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"36.0.18","versionType":"semver"},{"version":"36.0.18","status":"unaffected","versionType":"semver"},{"version":"37.0.0","status":"affected","lessThan":"48.0.6","versionType":"semver"},{"version":"48.0.6","status":"unaffected","versionType":"semver"},{"version":"49.0.0","status":"affected","lessThan":"49.0.3","versionType":"semver"},{"version":"49.0.3","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:cargo/wasmtime-wasi","packageIdentity":{"ecosystem":"crates.io","name":"wasmtime-wasi"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-118688"}],"remediation":[],"observedAt":"2026-10-29T14:37:41.847Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T14:20:31.980Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"Wasmtime versions before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 have a sandbox escape vulnerability via symlink rename. The weakness is related to UNIX Symbolic Link Following. Affected versions may allow an attacker to escape the sandbox.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T08:54:42.098Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-118688"},{"name":"OSV","url":"https://osv.dev/vulnerability/RUSTSEC-2026-0352"}]}}