{"api_version":"1","generated_at":"2026-04-22T22:50:30+00:00","cve":"CVE-2023-46136","urls":{"html":"https://cve.report/CVE-2023-46136","api":"https://cve.report/api/cve/CVE-2023-46136.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-46136","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-46136"},"summary":{"title":"CVE-2023-46136","description":"Werkzeug is a comprehensive WSGI web application library. If an upload of a file that starts with CR or LF and then is followed by megabytes of data without these characters: all of these bytes are appended chunk by chunk into internal bytearray and lookup for boundary is performed on growing buffer. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests. This vulnerability has been patched in version 3.0.1.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2023-10-25 18:17:00","updated_at":"2023-11-01 16:50:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"https://github.com/pallets/werkzeug/commit/f3c803b3ade485a45f12b6d6617595350c0f03e2","name":"https://github.com/pallets/werkzeug/commit/f3c803b3ade485a45f12b6d6617595350c0f03e2","refsource":"MISC","tags":[],"title":"Merge 3.0.x (#2801) · pallets/werkzeug@f3c803b · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/pallets/werkzeug/security/advisories/GHSA-hrfv-mqp8-q5rw","name":"https://github.com/pallets/werkzeug/security/advisories/GHSA-hrfv-mqp8-q5rw","refsource":"MISC","tags":[],"title":"DoS: High resource usage when parsing multipart/form-data containing a large part with CR/LF character at the beginning · Advisory · pallets/werkzeug · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-46136","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46136","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"46136","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"palletsprojects","cpe5":"werkzeug","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2023-46136","qid":"242530","title":"Red Hat OpenShift Container Platform 4.13 Security Update (RHSA-2023:7477)"},{"cve":"CVE-2023-46136","qid":"242551","title":"Red Hat OpenShift Container Platform 4.12 Security Update (RHSA-2023:7610)"},{"cve":"CVE-2023-46136","qid":"242578","title":"Red Hat OpenShift Container Platform 4.14 Security Update (RHSA-2023:7473)"},{"cve":"CVE-2023-46136","qid":"242872","title":"Red Hat Update for OpenStack Platform 17.1 (RHSA-2024:0214)"},{"cve":"CVE-2023-46136","qid":"242877","title":"Red Hat Update for OpenStack Platform 17.1 (RHSA-2024:0189)"},{"cve":"CVE-2023-46136","qid":"503487","title":"Alpine Linux Security Update for py3-werkzeug"},{"cve":"CVE-2023-46136","qid":"506180","title":"Alpine Linux Security Update for py3-werkzeug"},{"cve":"CVE-2023-46136","qid":"755208","title":"SUSE Enterprise Linux Security Update for python-Werkzeug (SUSE-SU-2023:4288-1)"},{"cve":"CVE-2023-46136","qid":"770216","title":"Red Hat OpenShift Container Platform 4.13 Security Update (RHSA-2023:7477)"},{"cve":"CVE-2023-46136","qid":"770219","title":"Red Hat OpenShift Container Platform 4.12 Security Update (RHSA-2023:7610)"},{"cve":"CVE-2023-46136","qid":"770220","title":"Red Hat OpenShift Container Platform 4.14 Security Update (RHSA-2023:7473)"},{"cve":"CVE-2023-46136","qid":"907655","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for python-werkzeug (31701)"},{"cve":"CVE-2023-46136","qid":"907664","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for python-werkzeug (31701-1)"},{"cve":"CVE-2023-46136","qid":"995725","title":"Python (Pip) Security Update for werkzeug (GHSA-hrfv-mqp8-q5rw)"}]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2023-46136","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"Werkzeug is a comprehensive WSGI web application library. If an upload of a file that starts with CR or LF and then is followed by megabytes of data without these characters: all of these bytes are appended chunk by chunk into internal bytearray and lookup for boundary is performed on growing buffer. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests. This vulnerability has been patched in version 3.0.1."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-407: Inefficient Algorithmic Complexity","cweId":"CWE-407"}]},{"description":[{"lang":"eng","value":"CWE-400: Uncontrolled Resource Consumption","cweId":"CWE-400"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"pallets","product":{"product_data":[{"product_name":"werkzeug","version":{"version_data":[{"version_affected":"=","version_value":"< 3.0.1"}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/pallets/werkzeug/security/advisories/GHSA-hrfv-mqp8-q5rw","refsource":"MISC","name":"https://github.com/pallets/werkzeug/security/advisories/GHSA-hrfv-mqp8-q5rw"},{"url":"https://github.com/pallets/werkzeug/commit/f3c803b3ade485a45f12b6d6617595350c0f03e2","refsource":"MISC","name":"https://github.com/pallets/werkzeug/commit/f3c803b3ade485a45f12b6d6617595350c0f03e2"}]},"source":{"advisory":"GHSA-hrfv-mqp8-q5rw","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}]}},"nvd":{"publishedDate":"2023-10-25 18:17:00","lastModifiedDate":"2023-11-01 16:50:00","problem_types":["CWE-787"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*","versionEndExcluding":"3.0.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}