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{"bugzilla": {"description": "python-multipart: Python-Multipart: Arbitrary file write via path traversal vulnerability", "id": "2433132", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2433132"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L", "status": "draft"}, "cwe": "CWE-22", "details": ["A flaw was found in Python-Multipart, a tool for parsing multipart form data in Python applications. This vulnerability, known as path traversal, allows a remote attacker to write uploaded files to any location on the server's file system. This exploitation occurs when specific non-default configuration options, `UPLOAD_DIR` and `UPLOAD_KEEP_FILENAME=True`, are enabled, and a malicious filename is provided during a file upload. The primary consequence is unauthorized file creation or modification, which could lead to system compromise."], "mitigation": {"lang": "en:us", "value": "To mitigate this vulnerability, avoid enabling the `UPLOAD_KEEP_FILENAME=True` configuration option in applications using `python-multipart`. This option, when used with `UPLOAD_DIR`, allows an attacker to write files to arbitrary locations. Disabling or not configuring `UPLOAD_KEEP_FILENAME=True` prevents the path traversal vulnerability."}, "name": "CVE-2026-24486", "package_state": [{"cpe": "cpe:/a:redhat:lightspeed_core", "fix_state": "Affected", "package_name": "lightspeed-core/lightspeed-stack-rhel9", "product_name": "Lightspeed Core"}, {"cpe": "cpe:/a:redhat:openshift_lightspeed", "fix_state": "Affected", "package_name": "openshift-lightspeed/lightspeed-ocp-rag-rhel9", "product_name": "OpenShift Lightspeed"}, {"cpe": "cpe:/a:redhat:openshift_lightspeed", "fix_state": "Affected", "package_name": "openshift-lightspeed/lightspeed-service-api-rhel9", "product_name": "OpenShift Lightspeed"}, {"cpe": "cpe:/a:redhat:ai_inference_server:3", "fix_state": "Affected", "package_name": "rhaiis-preview/vllm-cuda-rhel9", "product_name": "Red Hat AI Inference Server"}, {"cpe": "cpe:/a:redhat:ai_inference_server:3", "fix_state": "Affected", "package_name": "rhaiis/vllm-cuda-rhel9", "product_name": "Red Hat AI Inference Server"}, 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"product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Affected", "package_name": "rhoai/odh-vllm-cpu-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Affected", "package_name": "rhoai/odh-vllm-cuda-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Affected", "package_name": "rhoai/odh-vllm-gaudi-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Affected", "package_name": "rhoai/odh-vllm-rocm-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Affected", "package_name": "satellite/foreman-mcp-server-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Affected", "package_name": "satellite/iop-advisor-engine-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Affected", "package_name": "satellite/iop-host-inventory-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Affected", "package_name": "satellite/iop-vmaas-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Affected", "package_name": "satellite/iop-vulnerability-engine-rhel9", "product_name": "Red Hat Satellite 6"}], "public_date": "2026-01-27T00:34:06Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-24486\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-24486\nhttps://github.com/Kludex/python-multipart/commit/9433f4bbc9652bdde82bbe380984e32f8cfc89c4\nhttps://github.com/Kludex/python-multipart/releases/tag/0.0.22\nhttps://github.com/Kludex/python-multipart/security/advisories/GHSA-wp53-j4wj-2cfg"], "threat_severity": "Important"}

{"analysis": {"en": {"generated_at": "2026-04-18T02:32:23.401505+00:00", "value": {"mitigation_remediation": ["Apply the official patch by upgrading to python\u2011multipart version 0.0.22 or later", "If an upgrade is not yet possible, disable the UPLOAD_KEEP_FILENAME option or revert to the default configuration that does not preserve the client\u2011supplied file name", "Ensure that any configuration which allows file uploads is properly validated or that the upload directory is owned by a non\u2011privileged user and has strict permissions"], "summary": {"action": "Immediate Patch", "impact": "Arbitrary File Write"}, "threat_synthesis": {"affected_systems": "The vendor of this package is Kludex, with the product named python\u2011multipart. Software using earlier releases of python\u2011multipart before version 0.0.22 is affected. The affected configuration relies on an explicit UPLOAD_DIR and the flag UPLOAD_KEEP_FILENAME set to true. The Common Platform Enumeration indicates use in Python environments, typically within the FastAPI ecosystem.", "description_and_impact": "Python-Multipart, a multipart parser used in Python web projects, contains a Path Traversal flaw when its non-default settings allow the original file name to be preserved. The flaw enables an attacker to craft a malicious file name and cause the parser to write the uploaded content to an arbitrary path on the host system. This can lead to overwriting or creating critical files, potentially affecting confidentiality, integrity, or availability. The weakness is classified as CWE\u201122, a classic file path manipulation vulnerability.", "risk_and_exploitability": "The scoring model gives a CVSS score of 8.6, indicating high severity, while the EPSS score is less than 1%, suggesting a very low current exploitation probability. The vulnerability is not listed in the CISA KEV catalog. Based on the description, the attack vector would involve uploading a crafted multipart payload to a service that has enabled the risky configuration, allowing the attacker to write files wherever the process has permission. Although exploitation is currently unlikely, the potential impact of arbitrary write and the high severity mean it should be treated with priority."}}}}, "created": "2026-01-27T09:03:02.390681+00:00", "updated": "2026-04-18T02:45:27.274655+00:00", "vendors": ["kludex", "kludex$PRODUCT$python-multipart"]}