{"id":"GHSA-w47m-jpv2-qfw5","revision":null,"records":[{"revision":"51d170c8b86a479a8140ddedc71a7266","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-w47m-jpv2-qfw5","aliases":[],"title":"Duplicate Advisory: Knowns Sandbox Escape: Unauthenticated Header Injection Grants AI Agent Unrestricted Access to Host Filesystem","description":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-9h2q-r9fh-f98w. This link is maintained to preserve external references.\n\n### Original Description\nknowns versions before 0.31.0 fail to properly validate the x-opencode-directory request header in the /api/opencode proxy endpoint. Remote attackers can supply arbitrary directory paths to execute file operations outside the project root on the host system.","state":2,"publishedAt":"2026-09-10T18:31:45+00:00","modifiedAt":"2026-09-25T17:15:05.9432199+00:00","affected":[{"ecosystem":"npm","name":"knowns","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":null,"severity":null},{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/knowns-dev/knowns/security/advisories/GHSA-9h2q-r9fh-f98w","https://nvd.nist.gov/vuln/detail/CVE-2026-88899","https://github.com/knowns-dev/knowns/commit/37db0561b37b48b8bd035a417d7f1da6258ae657","https://github.com/knowns-dev/knowns/blob/v0.30.0/internal/server/server.go#L1283-L1296","https://github.com/knowns-dev/knowns/releases/tag/v0.31.0","https://www.vulncheck.com/advisories/knowns-before-0.31.0-external-control-of-agent-working-directory-via-x-opencode-directory-header"],"sourceUrl":"https://github.com/advisories/GHSA-w47m-jpv2-qfw5","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-w47m-jpv2-qfw5","identifiers":["GHSA-w47m-jpv2-qfw5"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-11-12T10:55:30.8237330+00:00","complete":true,"records":1097,"lastAttemptAt":"2026-11-12T10:55:30.823733+00:00","lastSuccessAt":"2026-11-12T10:55:31.0564011+00:00","error":null,"lastVerifiedAt":"2026-11-12T10:55:31.0564012+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. 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