{"id":"CVE-2026-27489","aliases":["GHSA-3r9x-f23j-gc73","PYSEC-2026-2239"],"url":"https://o3.security/vulnerability/CVE-2026-27489","summary":"ONNX: Path Traversal via Symlink","details":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, a path traversal vulnerability via symlink allows to read arbitrary files outside model or user-provided directory. This issue has been patched in version 1.21.0.","published":"2026-04-01T17:33:51.281Z","modified":"2026-08-12T15:33:01.861541Z","cvss":null,"epss":{"score":0.00593,"percentile":0.46766,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"onnx","fixedVersion":"1.21.0"}],"fix":{"url":"https://github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb","label":"onnx/onnx@4755f80"},"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27489.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24977"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-27489"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27489.json"},{"type":"ADVISORY","url":"https://github.com/onnx/onnx/security/advisories/GHSA-3r9x-f23j-gc73"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27489"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2453929"},{"type":"FIX","url":"https://github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T15:33:01.861541Z"}}