GitHub, Inc. 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

GitHub, Inc. CWE-400

GitHub, Inc. CWE-770

Werkzeug is a Web Server Gateway Interface web application library. Applications using `werkzeug.formparser.MultiPartParser` corresponding to a version of Werkzeug prior to 3.0.6 to parse `multipart/form-data` requests (e.g. all flask applications) are vulnerable to a relatively simple but effective resource exhaustion (denial of service) attack. A specifically crafted form submission request can cause the parser to allocate and block 3 to 8 times the upload size in main memory. There is no upper limit; a single upload at 1 Gbit/s can exhaust 32 GB of RAM in less than 60 seconds. Werkzeug version 3.0.6 fixes this issue.

GitHub, Inc. https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee [No types assigned]

GitHub, Inc. https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b [No types assigned]

GitHub, Inc. https://github.com/pallets/werkzeug/releases/tag/3.0.6 [No types assigned]

GitHub, Inc. https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2 [No types assigned]