How many CVEs have patched _get_sep?

5 published CVEs changed _get_sep in python/cpython, in 1 distinct patches totalling 10 changed lines, between 2025 and 2025.

What is the latest CVE that changed _get_sep?

CVE-2024-12718 (Bypass extraction filter to modify file metadata outside extraction directory), published 2025-06-03, changed lines 39 of Lib/posixpath.py.

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

python/cpython has 118 CVEs with a located fix in total; 5 of them changed _get_sep.

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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_get_sep

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Patched Functions
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Cpython
_get_sep

_get_sep in python/cpython: Patched by 5 CVEs

python/cpython

Function

_get_sep

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

Lib/posixpath.py

Last patched June 3, 2025

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2025

Years

By CVE publication date

Overview

_get_sep in python/cpython was changed by 5 published CVE fixes in 2025, in 1 distinct patches that added or removed 10 lines in total.

python/cpython has 118 CVEs with a located fix in total, so 4% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed _get_sep, 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

Bypass extraction filter to modify file metadata outside extraction directory
CVE-2024-12718 · line 39 · +1 −1
Medium · CVSS 5.3
EPSS 0.8%2025-06-03
Tarfile extracts filtered members when errorlevel=0
CVE-2025-4435 · line 39 · +1 −1
High · CVSS 7.5
EPSS 0.6%2025-06-03
Bypassing extraction filter to create symlinks to arbitrary targets outside extraction directory
CVE-2025-4138 · line 39 · +1 −1
High · CVSS 7.5
EPSS 1.4%2025-06-03
Extraction filter bypass for linking outside extraction directory
CVE-2025-4330 · line 39 · +1 −1
High · CVSS 7.5
EPSS 0.9%2025-06-03
Arbitrary writes via tarfile realpath overflow
CVE-2025-4517 · line 39 · +1 −1
Critical · CVSS 9.4
EPSS 1.4%2025-06-03

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1_realpathLib/posixpath.py5 CVEs · 1 patches2025
2expanduserLib/posixpath.py1 CVEs · 5 patches2025
3expandvarsLib/posixpath.py1 CVEs · 5 patches2025

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 _readlink_deep5 CVEs · Lib/ntpath.py _get_bothseps5 CVEs · Lib/ntpath.py realpath5 CVEs · Lib/ntpath.py

All patched functions in python/cpython

Frequently asked questions

Common questions about CVE fixes to _get_sep.

How many CVEs have patched _get_sep?: 5 published CVEs changed _get_sep in python/cpython, in 1 distinct patches totalling 10 changed lines, between 2025 and 2025.
What is the latest CVE that changed _get_sep?: CVE-2024-12718 (Bypass extraction filter to modify file metadata outside extraction directory), published 2025-06-03, changed lines 39 of Lib/posixpath.py.
How does _get_sep compare to the rest of python/cpython?: python/cpython has 118 CVEs with a located fix in total; 5 of them changed _get_sep.
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/posixpath.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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