How many CVEs have patched merge_old_version?

1 published CVEs changed merge_old_version in python/cpython, in 3 distinct patches totalling 4 changed lines, between 2026 and 2026.

What is the latest CVE that changed merge_old_version?

CVE-2026-17084 (stringprep.map_table_b2() deviates from RFC 3454 Table B.2), published 2026-08-18, changed lines 840 to 843 of Tools/unicode/makeunicodedata.py.

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

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

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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python/cpython

Function

merge_old_version

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

Tools/unicode/makeunicodedata.py

Last patched August 18, 2026

1

CVEs

That changed this function

3

Distinct patches

Backports counted once

4

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

merge_old_version in python/cpython was changed by 1 published CVE fixes in 2026, in 3 distinct patches that added or removed 4 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 merge_old_version, newest first, with the lines each fix touched.

stringprep.map_table_b2() deviates from RFC 3454 Table B.2
CVE-2026-17084 · lines 840–843 · +4 −0
Medium · CVSS 6.0
EPSS 0.7%2026-08-18

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Other functions in these files

Functions in the same file that CVE fixes also changed.

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 merge_old_version.

How many CVEs have patched merge_old_version?: 1 published CVEs changed merge_old_version in python/cpython, in 3 distinct patches totalling 4 changed lines, between 2026 and 2026.
What is the latest CVE that changed merge_old_version?: CVE-2026-17084 (stringprep.map_table_b2() deviates from RFC 3454 Table B.2), published 2026-08-18, changed lines 840 to 843 of Tools/unicode/makeunicodedata.py.
How does merge_old_version compare to the rest of python/cpython?: python/cpython has 118 CVEs with a located fix in total; 1 of them changed merge_old_version.
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

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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