How many CVEs have a located fix in pallets/werkzeug?

13 published CVEs have a fix traced to functions in pallets/werkzeug, touching 34 functions across 13 files.

Which function in pallets/werkzeug has been patched by the most CVEs?

safe_join in src/werkzeug/security.py has been changed by 5 CVE fixes, from 2024 to 2026.

How large is a typical CVE fix in pallets/werkzeug?

The median fix changes 19 lines. 54% of fixes change 20 lines or fewer, and 38% change a single function.

How is a fix located to a function?

The upstream fix commit for each CVE is fetched and its diff is split into hunks. Each hunk is attributed to the function, method or type it changes, using the definition the diff itself names. Backports of the same fix to stable branches are counted once.

RadicalNotion.AI

Log in Create an account

python

javascript

#457 of 500 repositories

pallets/werkzeug

Name: pallets/werkzeug: functions patched by CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

Functions and files changed by CVE fixes in this repository.

Latest located fix September 29, 2026

13

CVE fixes located

Published CVEs

34

Functions patched

Distinct function sites

13

Files patched

Distinct source files

2017–2026

Years covered

By CVE publication date

Overview

13 published CVEs have a fix traced to functions in pallets/werkzeug, the earliest published in 2017. Those fixes changed 34 distinct functions across 13 files, in 110 patch hunks.

Among the 500 repositories tracked here, pallets/werkzeug ranks #457 by the number of CVEs with a located fix.

Most patched functions

Functions in pallets/werkzeug changed by the most CVE fixes.

Most patched files

Files in pallets/werkzeug changed by the most CVE fixes.

1src/werkzeug/security.py5 CVEs · 2 functions
2src/werkzeug/formparser.py3 CVEs · 7 functions
3src/werkzeug/sansio/multipart.py3 CVEs · 5 functions
4src/werkzeug/_internal.py3 CVEs · 2 functions
5src/werkzeug/debug/__init__.py2 CVEs · 8 functions
6src/werkzeug/debug/shared/debugger.js1 CVEs · 2 functions
7src/werkzeug/wrappers/request.py1 CVEs · 2 functions
8src/werkzeug/sansio/http.py1 CVEs · 1 functions
9src/werkzeug/sansio/utils.py1 CVEs · 1 functions
10src/werkzeug/serving.py1 CVEs · 1 functions

Fix size

How much code a CVE fix in pallets/werkzeug changes, with backports counted once.

19

Median lines changed

Added plus removed, per CVE

54%

Fixes of 20 lines or fewer

Share of CVE fixes

38%

Fixes in a single function

Share of CVE fixes

Latest CVEs

The most recently published CVEs with a fix located in pallets/werkzeug, and the functions each fix changed.

Werkzeug safe_join() allows Windows special device names
CVE-2026-102598safe_join
Medium · CVSS 6.3
EPSS 0.4%2026-09-29
Werkzeug safe_join() allows Windows special device names
CVE-2026-27199safe_join
Medium · CVSS 6.3
EPSS 0.6%2026-02-21
Werkzeug safe_join() allows Windows special device names with compound extensions
CVE-2026-21860safe_join
Medium · CVSS 6.3
EPSS 0.5%2026-01-08
Werkzeug safe_join() allows Windows special device names
CVE-2025-66221cached_property gen_salt safe_join
Medium · CVSS 6.3
EPSS 0.5%2025-11-29
Werkzeug possible resource exhaustion when parsing file data in forms
CVE-2024-49767start_file_streaming import _fix_ie_filename
Medium · CVSS 6.9
EPSS 1.1%2024-10-25
Werkzeug safe_join not safe on Windows
CVE-2024-49766safe_join
Medium · CVSS 6.3
EPSS 0.8%2024-10-25
Werkzeug's improper usage of a pathname and improper CSRF protection results in the remote command execution
CVE-2024-34069__init__check_host_trust log_pin_request
High · CVSS 7.5
EPSS 3.4%2024-05-06
Werkzeug vulnerable to high resource usage when parsing multipart/form-data containing a large part with CR/LF character at the beginning
CVE-2023-46136start_file_streaming import _fix_ie_filename
High · CVSS 8.0
EPSS 1.1%2023-10-24
High resource usage when parsing multipart form data with many fields
CVE-2023-25577__init__Request next_event
High · CVSS 7.5
EPSS 1.4%2023-02-14
Incorrect parsing of nameless cookies leads to __Host- cookies bypass
CVE-2023-23934_cookie_parse_impl _parse_pairs
Low · CVSS 3.5
EPSS 0.5%2023-02-14
Open Redirect in werkzeug
CVE-2020-28724shutdown_server
Medium · CVSS 5.3
EPSS 1.7%2020-11-18
Pallets Werkzeug Insufficient Entropy
CVE-2019-14806_generate
High · CVSS 8.7
EPSS 1.9%2019-08-09

Get an alert for each new pallets/werkzeug CVE, with the patched functions and AI-written analysis.

Monitor werkzeug CVEs

Other repositories

Repositories with a similar number of located CVE fixes.

apache/kylin13 CVEs apache/superset13 CVEs bagisto/bagisto13 CVEs better-auth/better-auth13 CVEs caddyserver/caddy13 CVEs cerebrate-project/cerebrate13 CVEs CoreWCF/CoreWCF13 CVEs craftcms/commerce13 CVEs

Browse all repositories

Frequently asked questions

Common questions about CVE fixes in pallets/werkzeug.

How many CVEs have a located fix in pallets/werkzeug?: 13 published CVEs have a fix traced to functions in pallets/werkzeug, touching 34 functions across 13 files.
Which function in pallets/werkzeug has been patched by the most CVEs?: safe_join in src/werkzeug/security.py has been changed by 5 CVE fixes, from 2024 to 2026.
How large is a typical CVE fix in pallets/werkzeug?: The median fix changes 19 lines. 54% of fixes change 20 lines or fewer, and 38% change a single function.
How is a fix located to a function?: The upstream fix commit for each CVE is fetched and its diff is split into hunks. Each hunk is attributed to the function, method or type it changes, using the definition the diff itself names. Backports of the same fix to stable branches are counted once.

References

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

Track pallets/werkzeug CVEs

Get an alert when a new CVE lands in this repository, with the patched functions and AI-written remediation guidance.

Create an account See pricing