{"id":"CVE-2026-34445","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-34445","generatedAt":"2026-10-28T03:32:33.019Z","title":"Due to this, an attacker could craft a malicious model that overwrites internal object properties.","description":"Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, the ExternalDataInfo class in ONNX was using Python’s setattr() function to load metadata (like file paths or data lengths) directly from an ONNX model file. It didn’t check if the \"keys\" in the file were valid. Due to this, an attacker could craft a malicious model that overwrites internal object properties. This issue has been patched in version 1.21.0.","published":"2026-04-01T18:16:31.000Z","lastModified":"2026-06-17T10:39:04.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},"cwe":["CWE-20","CWE-400","CWE-915"],"affected":["linuxfoundation/onnx"],"epss":{"score":0.00288,"percentile":0.21175,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/onnx/onnx/commit/e30c6935d67cc3eca2fa284e37248e7c0036c46b","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/onnx/onnx/pull/7751","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/onnx/onnx/security/advisories/GHSA-538c-55jv-c5g9","tags":["Patch","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-34445","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}