Technology · PyPI
werkzeug (PyPI) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 16 vulnerabilities in werkzeug (PyPI): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-102598, was published on 29 September 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About werkzeug (PyPI)
Werkzeug is a comprehensive WSGI web application library for Python.
Latest werkzeug (PyPI) vulnerabilities
- CVE-2026-102598: Werkzeug path traversal via NUL device with NTFS ADS markermediumCVSS 4EPSS 0.4%
- CVE-2026-21860: PYSEC-2026-2044 - Werkzeug safe_join() allows Windows special device names with compound extensionslowCVSS 3.1EPSS 0.5%
- CVE-2024-49766: PYSEC-2026-2045 - Werkzeug safe_join not safe on WindowsmediumCVSS 4EPSS 0.8%
- CVE-2024-34069: PYSEC-2026-2043 - Werkzeug debugger vulnerable to remote execution when interacting with attacker controlled domainlowCVSS 3.1EPSS 3.4%
- CVE-2019-14322: PYSEC-2026-1065 - Pallets Werkzeug vulnerable to Path TraversallowCVSS 3.1EPSS 55.8%
- CVE-2026-27199: Werkzeug safe_join() allows Windows special device namesmediumCVSS 4EPSS 0.5%
- CVE-2025-66221: PYSEC-2026-2046 - Werkzeug safe_join() allows Windows special device namesmediumCVSS 5.3EPSS 0.5%
- CVE-2024-49767: Pallets Werkzeug resource exhaustion in multipart form parsinghighCVSS 7.5EPSS 1.1%
- CVE-2023-46136: Pallets Werkzeug denial of service in multipart parsermediumCVSS 5.7EPSS 1.1%
- CVE-2023-23934: Incorrect parsing of nameless cookies leads to __Host- cookies bypasslowCVSS 3.1EPSS 0.5%
- CVE-2023-25577: High resource usage when parsing multipart form data with many fieldslowCVSS 3.1EPSS 1.4%
- CVE-2022-29361: PYSEC-2022-203 - ** DISPUTED ** Improper parsing of HTTP requests in Pallets Werkzeug v2.1.0 and below allows…infoEPSS 8.1%
- CVE-2020-28724: PYSEC-2020-157 - Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.lowCVSS 3.1EPSS 1.7%
- PYSEC-2019-70 - Pallets Werkzeug before 0.15.3, when used with Docker, has insufficient debugger PIN randomness…info
- CVE-2019-14806: Pallets Werkzeug Insufficient EntropylowCVSS 3.1EPSS 2.3%
- CVE-2016-10516: Pallets Werkzeug cross-site scripting vulnerabilitylowCVSS 3EPSS 2.0%
Most severe werkzeug (PyPI) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2024-49767: Pallets Werkzeug resource exhaustion in multipart form parsinghighCVSS 7.5EPSS 1.1%
- CVE-2023-46136: Pallets Werkzeug denial of service in multipart parsermediumCVSS 5.7EPSS 1.1%
- CVE-2025-66221: PYSEC-2026-2046 - Werkzeug safe_join() allows Windows special device namesmediumCVSS 5.3EPSS 0.5%
- CVE-2024-49766: PYSEC-2026-2045 - Werkzeug safe_join not safe on WindowsmediumCVSS 4EPSS 0.8%
- CVE-2026-27199: Werkzeug safe_join() allows Windows special device namesmediumCVSS 4EPSS 0.5%
- CVE-2026-102598: Werkzeug path traversal via NUL device with NTFS ADS markermediumCVSS 4EPSS 0.4%
- CVE-2019-14322: PYSEC-2026-1065 - Pallets Werkzeug vulnerable to Path TraversallowCVSS 3.1EPSS 55.8%
- CVE-2024-34069: PYSEC-2026-2043 - Werkzeug debugger vulnerable to remote execution when interacting with attacker controlled domainlowCVSS 3.1EPSS 3.4%
- CVE-2019-14806: Pallets Werkzeug Insufficient EntropylowCVSS 3.1EPSS 2.3%
- CVE-2020-28724: PYSEC-2020-157 - Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.lowCVSS 3.1EPSS 1.7%
Vulnerabilities per week
Nothing in the last four weeks, down from 1 vulnerability in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 1 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many werkzeug (PyPI) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/werkzeug)<a href="https://junglewise.ai/threats/technologies/werkzeug"><img src="https://junglewise.ai/threats/technologies/werkzeug/badge.svg" alt="werkzeug (PyPI) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/werkzeug.json, and this page as text at https://junglewise.ai/threats/technologies/werkzeug.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "werkzeug (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/werkzeug, 13 November 2026.