{"answers":{"affected":"3 open source packages ship an affected version, including onnx. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27489 exists.","fix":"Upgrade onnx to 1.21.0 or later.","what":"CVE-2026-27489 is a high-severity path traversal vulnerability in onnx, published on 1 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-27489 and fix it if it is affected.\n\nWhat it is: CVE-2026-27489 is a high-severity path traversal vulnerability in onnx, published on 1 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27489 exists.\n\nAffected packages and fixed versions:\n- onnx (PyPI): affected all versions; fixed in 1.21.0\n- onnx (PyPI): affected all versions; fixed in 1.21.0\n- onnx (PyPI): affected all versions; fixed in 1.21.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-27489/ (Markdown: https://insights.sbomify.com/CVE-2026-27489/index.md)","id":"CVE-2026-27489","markdown":"https://insights.sbomify.com/CVE-2026-27489/index.md","name":"CVE-2026-27489","record":{"aliases":["DEBIAN-CVE-2026-27489","ECHO-bbdd-cc38-c3a7","GHSA-3r9x-f23j-gc73","PYSEC-2026-2239","UBUNTU-CVE-2026-27489"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"ONNX machine learning library","requires_auth":"none","summary":"An attacker can read arbitrary files outside the intended directory via symlink path traversal in the ONNX library.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"onnx","vendor":"linuxfoundation"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"},{"id":"CWE-61","name":"UNIX Symbolic Link (Symlink) Following"},{"id":"CWE-23","name":"Relative Path Traversal"}],"description":"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.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"ONNX: Path Traversal via Symlink","id":"CVE-2026-27489","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Combodo iTop: Weak secret generation for inline image","id":"CVE-2026-27490"},"packages":[{"ecosystem":"PyPI","fixed":["1.21.0"],"introduced":["0"],"last_affected":[],"package":"onnx","purl":null,"source":"GHSA-3r9x-f23j-gc73"},{"ecosystem":"PyPI","fixed":["1.21.0"],"introduced":["0"],"last_affected":[],"package":"onnx","purl":"pkg:pypi/onnx","source":"GHSA-3r9x-f23j-gc73"},{"ecosystem":"PyPI","fixed":["1.21.0"],"introduced":["0"],"last_affected":[],"package":"onnx","purl":"pkg:pypi/onnx","source":"PYSEC-2026-2239"}],"prev":{"headline":"OpenClaw hardened cron webhook delivery against SSRF","id":"CVE-2026-27488"},"products":["onnx"],"published":"2026-04-01","related":[{"cvss_score":8.8,"headline":"Path traversal in n/a","id":"CVE-2025-51480","kev_date_added":null,"published":"2025-07-22"},{"cvss_score":8.8,"headline":"Arbitrary File Overwrite in download_model_with_test_data in onnx/onnx","id":"CVE-2024-5187","kev_date_added":null,"published":"2024-06-06"},{"cvss_score":8.6,"headline":"ONNX: Malicious ONNX models can crash servers by exploiting unprotected object settings.","id":"CVE-2026-34445","kev_date_added":null,"published":"2026-04-01"},{"cvss_score":8.6,"headline":"ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack","id":"CVE-2026-28500","kev_date_added":null,"published":"2026-03-18"},{"cvss_score":7.5,"headline":"Directory Traversal in onnx","id":"CVE-2022-25882","kev_date_added":null,"published":"2023-01-25"},{"cvss_score":6.8,"headline":"ONNX symlink-following and path-traversal arbitrary file write","id":"CVE-2026-49114","kev_date_added":null,"published":"2026-08-21"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["onnx"]},"summary":"An attacker can read arbitrary files outside the intended directory via symlink path traversal in the ONNX library.","url":"https://insights.sbomify.com/CVE-2026-27489/"}