How many CVEs have patched letters?

1 published CVEs changed letters in py-pdf/pypdf, in 2 distinct patches totalling 5 changed lines, between 2026 and 2026.

What is the latest CVE that changed letters?

CVE-2026-102993 (pypdf: Possible large memory usage when retrieving Roman page labels), published 2026-09-30, changed lines 60 to 61 of pypdf/_page_labels.py.

How does letters compare to the rest of py-pdf/pypdf?

py-pdf/pypdf has 52 CVEs with a located fix in total; 1 of them changed letters.

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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Letters

letters in py-pdf/pypdf: Patched by 1 CVEs

py-pdf/pypdf

Function

letters

Name: letters in py-pdf/pypdf: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

pypdf/_page_labels.py

Last patched September 30, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

letters in py-pdf/pypdf was changed by 1 published CVE fixes in 2026, in 2 distinct patches that added or removed 5 lines in total.

py-pdf/pypdf has 52 CVEs with a located fix in total, so 2% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed letters, 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

pypdf: Possible large memory usage when retrieving Roman page labels
CVE-2026-102993 · lines 60–61 · +2 −3
High · CVSS 8.7
EPSS 0.4%2026-09-30

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1number2uppercase_letterpypdf/_page_labels.py2 CVEs · 4 patches2026
2number2uppercase_roman_numeralpypdf/_page_labels.py2 CVEs · 4 patches2026
3get_label_from_numspypdf/_page_labels.py1 CVEs · 2 patches2026
4nums_nextpypdf/_page_labels.py1 CVEs · 2 patches2026
5roman_numpypdf/_page_labels.py1 CVEs · 2 patches2026

Other hotspots in the repository

Functions in py-pdf/pypdf changed by the most CVE fixes.

decode5 CVEs · pypdf/filters.py _decompress_with_limit4 CVEs · pypdf/filters.py decompress3 CVEs · pypdf/filters.py _get_outline3 CVEs · pypdf/_doc_common.py _flatten3 CVEs · pypdf/_doc_common.py _extract_text3 CVEs · pypdf/_page.py

All patched functions in py-pdf/pypdf

Frequently asked questions

Common questions about CVE fixes to letters.

How many CVEs have patched letters?: 1 published CVEs changed letters in py-pdf/pypdf, in 2 distinct patches totalling 5 changed lines, between 2026 and 2026.
What is the latest CVE that changed letters?: CVE-2026-102993 (pypdf: Possible large memory usage when retrieving Roman page labels), published 2026-09-30, changed lines 60 to 61 of pypdf/_page_labels.py.
How does letters compare to the rest of py-pdf/pypdf?: py-pdf/pypdf has 52 CVEs with a located fix in total; 1 of them changed letters.
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

pypdf/_page_labels.py on GitHub (opens in a new tab)
All patched functions in py-pdf/pypdf
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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