PYSEC-2026-3417
Werkzeug possible resource exhaustion when parsing file data in forms
At a glance
- Published
- Updated
- CVE
- CVE-2024-49767
- Aliases
- GHSA-q34m-jh98-gwm2, PYSEC-2026-1860
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS_V4
- 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
Description
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. The `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.
Affected packages
| Package | Versions |
|---|---|
| PyPI · werkzeug | introduced 2.0.0rc1, fixed 3.0.6 |
References
- https://github.com/pallets/werkzeug/security/advisories/GHSA-q34m-jh98-gwm2 WEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-49767 ADVISORY
- https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee WEB
- https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f WEB
- https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b WEB
- https://github.com/pallets/werkzeug/commit/cbb446fdcada7685fce936ded01b76c08dbd6eb5 WEB
- https://github.com/pallets/werkzeug PACKAGE
- https://github.com/pallets/werkzeug/releases/tag/3.0.6 WEB
- https://security.netapp.com/advisory/ntap-20250103-0007 WEB
- https://pypi.org/project/werkzeug PACKAGE
- https://github.com/advisories/GHSA-q34m-jh98-gwm2 ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |