How many CVEs have patched _guess_quote_and_delimiter?

1 published CVEs changed _guess_quote_and_delimiter in python/cpython, in 2 distinct patches totalling 16 changed lines, between 2026 and 2026.

What is the latest CVE that changed _guess_quote_and_delimiter?

CVE-2026-18503 (Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()), published 2026-08-10, changed lines 218 to 229 of Lib/csv.py.

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

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

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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_guess_quote_and_delimiter

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Patched Functions
Python
Cpython
_guess_quote_and_delimiter

_guess_quote_and_delimiter in python/cpython: Patched by 1 CVEs

python/cpython

Function

_guess_quote_and_delimiter

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

Lib/csv.py

Last patched August 10, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

_guess_quote_and_delimiter in python/cpython was changed by 1 published CVE fixes in 2026, in 2 distinct patches that added or removed 16 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 _guess_quote_and_delimiter, newest first, with the lines each fix touched.

Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()
CVE-2026-18503 · lines 218–229 · +11 −5
Low · CVSS 2.4
EPSS 0.1%2026-08-10

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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 _guess_quote_and_delimiter.

How many CVEs have patched _guess_quote_and_delimiter?: 1 published CVEs changed _guess_quote_and_delimiter in python/cpython, in 2 distinct patches totalling 16 changed lines, between 2026 and 2026.
What is the latest CVE that changed _guess_quote_and_delimiter?: CVE-2026-18503 (Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()), published 2026-08-10, changed lines 218 to 229 of Lib/csv.py.
How does _guess_quote_and_delimiter compare to the rest of python/cpython?: python/cpython has 118 CVEs with a located fix in total; 1 of them changed _guess_quote_and_delimiter.
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/csv.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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