{"id":"PYSEC-2026-3417","summary":"Werkzeug possible resource exhaustion when parsing file data in forms","details":"Applications using Werkzeug to parse `multipart/form-data` requests are vulnerable to resource exhaustion. A specially crafted form body can bypass the `Request.max_form_memory_size` setting.\n\n\nThe `Request.max_content_length` setting, as well as resource limits provided by deployment software and platforms, are also available to limit the resources used during a request. This vulnerability does not affect those settings. All three types of limits should be considered and set appropriately when deploying an application.","aliases":["CVE-2024-49767","GHSA-q34m-jh98-gwm2","PYSEC-2026-1860"],"modified":"2026-07-13T16:43:34.482065524Z","published":"2026-07-13T14:36:32.817473Z","references":[{"type":"WEB","url":"https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49767"},{"type":"WEB","url":"https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee"},{"type":"WEB","url":"https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f"},{"type":"WEB","url":"https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b"},{"type":"WEB","url":"https://github.com/pallets/werkzeug/commit/cbb446fdcada7685fce936ded01b76c08dbd6eb5"},{"type":"PACKAGE","url":"https://github.com/pallets/werkzeug"},{"type":"WEB","url":"https://github.com/pallets/werkzeug/releases/tag/3.0.6"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20250103-0007"},{"type":"PACKAGE","url":"https://pypi.org/project/werkzeug"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-q34m-jh98-gwm2"}],"affected":[{"package":{"name":"werkzeug","ecosystem":"PyPI","purl":"pkg:pypi/werkzeug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0rc1"},{"fixed":"3.0.6"}]}],"versions":["2.0.0","2.0.0rc1","2.0.0rc2","2.0.0rc3","2.0.0rc4","2.0.0rc5","2.0.1","2.0.2","2.0.3","2.1.0","2.1.1","2.1.2","2.2.0","2.2.0a1","2.2.1","2.2.2","2.2.3","2.3.0","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","2.3.6","2.3.7","2.3.8","3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/werkzeug/PYSEC-2026-3417.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}