How many CVEs have patched data_open?

1 published CVEs changed data_open in python/cpython, in 4 distinct patches totalling 5 changed lines, between 2026 and 2026.

What is the latest CVE that changed data_open?

CVE-2025-15282 (Header injection via newlines in data URL mediatype), published 2026-01-20, changed lines 1657 to 1661 of Lib/urllib/request.py.

How does data_open compare to the rest of python/cpython?

python/cpython has 118 CVEs with a located fix in total; 1 of them changed data_open.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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Data_open

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Patched Functions
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Data_open

data_open in python/cpython: Patched by 1 CVEs

python/cpython

Function

data_open

Name: data_open in python/cpython: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

Lib/urllib/request.py

Last patched January 20, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

data_open in python/cpython was changed by 1 published CVE fixes in 2026, in 4 distinct patches that added or removed 5 lines in total.

python/cpython has 118 CVEs with a located fix in total, so 1% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed data_open, newest first, with the lines each fix touched.

On this page

Overview
CVEs that patched it
Other functions in these files
Other hotspots in the repository
FAQ
References

Header injection via newlines in data URL mediatype
CVE-2025-15282 · lines 1657–1661 · +5 −0
Medium · CVSS 6.0
EPSS 0.5%2026-01-20

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1add_passwordLib/urllib/request.py1 CVEs · 5 patches2026
2_reduce_uri_with_schemeLib/urllib/request.py1 CVEs · 5 patches2026
3update_authenticatedLib/urllib/request.py1 CVEs · 5 patches2026
4openLib/urllib/request.py1 CVEs · 4 patches2019
5_parse_realmLib/urllib/request.py1 CVEs · 4 patches2020
6getproxies_environmentLib/urllib/request.py1 CVEs · 1 patches2019

Other hotspots in the repository

Functions in python/cpython changed by the most CVE fixes.

makelink_with_filter9 CVEs · Lib/tarfile.py _get_filtered_attrs7 CVEs · Lib/tarfile.py extract6 CVEs · Lib/tarfile.py _get_sep5 CVEs · Lib/posixpath.py _readlink_deep5 CVEs · Lib/ntpath.py _get_bothseps5 CVEs · Lib/ntpath.py

All patched functions in python/cpython

Frequently asked questions

Common questions about CVE fixes to data_open.

How many CVEs have patched data_open?: 1 published CVEs changed data_open in python/cpython, in 4 distinct patches totalling 5 changed lines, between 2026 and 2026.
What is the latest CVE that changed data_open?: CVE-2025-15282 (Header injection via newlines in data URL mediatype), published 2026-01-20, changed lines 1657 to 1661 of Lib/urllib/request.py.
How does data_open compare to the rest of python/cpython?: python/cpython has 118 CVEs with a located fix in total; 1 of them changed data_open.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

Lib/urllib/request.py on GitHub (opens in a new tab)
All patched functions in python/cpython
Patched functions directory

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

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