# werkzeug (PyPI) vulnerabilities

Source: https://junglewise.ai/threats/technologies/werkzeug  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/werkzeug.json  
License: CC BY 4.0 with a link back

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.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 16 (0 critical, 0 exploited in the wild)

## 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 marker](https://junglewise.ai/threats/cve-2026-102598-werkzeug-is-a-comprehensive-wsgi-web-application-library-prior) (medium, CVSS 4, published 29 Sep 2026)
- [CVE-2026-21860: PYSEC-2026-2044 - Werkzeug safe_join() allows Windows special device names with compound extensions](https://junglewise.ai/threats/cve-2026-21860-werkzeug-safe-join-allows-windows-special-device-names-with) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2024-49766: PYSEC-2026-2045 - Werkzeug safe_join not safe on Windows](https://junglewise.ai/threats/cve-2024-49766-werkzeug-safe-join-not-safe-on-windows) (medium, CVSS 4, published 7 Jul 2026)
- [CVE-2024-34069: PYSEC-2026-2043 - Werkzeug debugger vulnerable to remote execution when interacting with attacker controlled domain](https://junglewise.ai/threats/cve-2024-34069-werkzeug-debugger-remote-code-execution-via-attacker-controlled) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2019-14322: PYSEC-2026-1065 - Pallets Werkzeug vulnerable to Path Traversal](https://junglewise.ai/threats/cve-2019-14322-pallets-werkzeug-vulnerable-to-path-traversal) (low, CVSS 3.1, published 6 Jul 2026)
- [CVE-2026-27199: Werkzeug safe_join() allows Windows special device names](https://junglewise.ai/threats/cve-2026-27199-werkzeug-safe-join-allows-windows-special-device-names) (medium, CVSS 4, published 21 Feb 2026)
- [CVE-2025-66221: PYSEC-2026-2046 - Werkzeug safe_join() allows Windows special device names](https://junglewise.ai/threats/cve-2025-66221-werkzeug-safe-join-allows-windows-special-device-names) (medium, CVSS 5.3, published 29 Nov 2025)
- [CVE-2024-49767: Pallets Werkzeug resource exhaustion in multipart form parsing](https://junglewise.ai/threats/cve-2024-49767-pallets-werkzeug-resource-exhaustion-in-multipart-form-parsing) (high, CVSS 7.5, published 25 Oct 2024)
- [CVE-2023-46136: Pallets Werkzeug denial of service in multipart parser](https://junglewise.ai/threats/cve-2023-46136-pallets-werkzeug-denial-of-service-in-multipart-parser) (medium, CVSS 5.7, published 25 Oct 2023)
- [CVE-2023-23934: Incorrect parsing of nameless cookies leads to __Host- cookies bypass](https://junglewise.ai/threats/cve-2023-23934-incorrect-parsing-of-nameless-cookies-leads-to-host-cookies) (low, CVSS 3.1, published 14 Feb 2023)
- [CVE-2023-25577: High resource usage when parsing multipart form data with many fields](https://junglewise.ai/threats/cve-2023-25577-high-resource-usage-when-parsing-multipart-form-data-with-many) (low, CVSS 3.1, published 14 Feb 2023)
- [CVE-2022-29361: PYSEC-2022-203 - ** DISPUTED ** Improper parsing of HTTP requests in Pallets Werkzeug v2.1.0 and below allows…](https://junglewise.ai/threats/cve-2022-29361-pysec-2022-203-disputed-improper-parsing-of-http-requests-in) (info, published 25 May 2022)
- [CVE-2020-28724: PYSEC-2020-157 - Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.](https://junglewise.ai/threats/cve-2020-28724-werkzeug-open-redirect-via-double-slash-in-url) (low, CVSS 3.1, published 18 Nov 2020)
- [PYSEC-2019-70 - Pallets Werkzeug before 0.15.3, when used with Docker, has insufficient debugger PIN randomness…](https://junglewise.ai/threats/pysec-2019-70-pallets-werkzeug-before-0-15-3-when-used-with-docker-has-d5477a27) (info, published 9 Aug 2019)
- [CVE-2019-14806: Pallets Werkzeug Insufficient Entropy](https://junglewise.ai/threats/cve-2019-14806-pallets-werkzeug-insufficient-entropy) (low, CVSS 3.1, published 9 Aug 2019)
- [CVE-2016-10516: Pallets Werkzeug cross-site scripting vulnerability](https://junglewise.ai/threats/cve-2016-10516-pallets-werkzeug-cross-site-scripting-vulnerability) (low, CVSS 3, published 23 Oct 2017)

## Most severe werkzeug (PyPI) vulnerabilities

- [CVE-2024-49767: Pallets Werkzeug resource exhaustion in multipart form parsing](https://junglewise.ai/threats/cve-2024-49767-pallets-werkzeug-resource-exhaustion-in-multipart-form-parsing) (high, CVSS 7.5, published 25 Oct 2024)
- [CVE-2023-46136: Pallets Werkzeug denial of service in multipart parser](https://junglewise.ai/threats/cve-2023-46136-pallets-werkzeug-denial-of-service-in-multipart-parser) (medium, CVSS 5.7, published 25 Oct 2023)
- [CVE-2025-66221: PYSEC-2026-2046 - Werkzeug safe_join() allows Windows special device names](https://junglewise.ai/threats/cve-2025-66221-werkzeug-safe-join-allows-windows-special-device-names) (medium, CVSS 5.3, published 29 Nov 2025)
- [CVE-2024-49766: PYSEC-2026-2045 - Werkzeug safe_join not safe on Windows](https://junglewise.ai/threats/cve-2024-49766-werkzeug-safe-join-not-safe-on-windows) (medium, CVSS 4, published 7 Jul 2026)
- [CVE-2026-27199: Werkzeug safe_join() allows Windows special device names](https://junglewise.ai/threats/cve-2026-27199-werkzeug-safe-join-allows-windows-special-device-names) (medium, CVSS 4, published 21 Feb 2026)
- [CVE-2026-102598: Werkzeug path traversal via NUL device with NTFS ADS marker](https://junglewise.ai/threats/cve-2026-102598-werkzeug-is-a-comprehensive-wsgi-web-application-library-prior) (medium, CVSS 4, published 29 Sep 2026)
- [CVE-2019-14322: PYSEC-2026-1065 - Pallets Werkzeug vulnerable to Path Traversal](https://junglewise.ai/threats/cve-2019-14322-pallets-werkzeug-vulnerable-to-path-traversal) (low, CVSS 3.1, published 6 Jul 2026)
- [CVE-2024-34069: PYSEC-2026-2043 - Werkzeug debugger vulnerable to remote execution when interacting with attacker controlled domain](https://junglewise.ai/threats/cve-2024-34069-werkzeug-debugger-remote-code-execution-via-attacker-controlled) (low, CVSS 3.1, published 7 Jul 2026)
- [CVE-2019-14806: Pallets Werkzeug Insufficient Entropy](https://junglewise.ai/threats/cve-2019-14806-pallets-werkzeug-insufficient-entropy) (low, CVSS 3.1, published 9 Aug 2019)
- [CVE-2020-28724: PYSEC-2020-157 - Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.](https://junglewise.ai/threats/cve-2020-28724-werkzeug-open-redirect-via-double-slash-in-url) (low, CVSS 3.1, published 18 Nov 2020)

## Vulnerabilities per week

Nothing in the last four weeks, down from 1 vulnerability in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 1 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other PyPI technologies

- [tensorflow (PyPI)](https://junglewise.ai/threats/technologies/pypi-tensorflow): 435 vulnerabilities
- [tensorflow-cpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-cpu): 430 vulnerabilities
- [tensorflow-gpu (PyPI)](https://junglewise.ai/threats/technologies/tensorflow-gpu): 427 vulnerabilities
- [open-webui (PyPI)](https://junglewise.ai/threats/technologies/open-webui): 177 vulnerabilities
- [Django (PyPI)](https://junglewise.ai/threats/technologies/django): 173 vulnerabilities
- [apache-airflow (PyPI)](https://junglewise.ai/threats/technologies/apache-airflow): 159 vulnerabilities
- [pillow (PyPI)](https://junglewise.ai/threats/technologies/pillow): 125 vulnerabilities
- [praisonai (PyPI)](https://junglewise.ai/threats/technologies/pypi-praisonai): 120 vulnerabilities
- [vllm (PyPI)](https://junglewise.ai/threats/technologies/pypi-vllm): 117 vulnerabilities
- [plone (PyPI)](https://junglewise.ai/threats/technologies/pypi-plone): 101 vulnerabilities
- [mlflow (PyPI)](https://junglewise.ai/threats/technologies/mlflow): 88 vulnerabilities
- [picklescan (PyPI)](https://junglewise.ai/threats/technologies/picklescan): 86 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "werkzeug (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/werkzeug, 13 November 2026.