How many CVEs have patched merge?

2 published CVEs changed merge in py-pdf/pypdf, in 1 distinct patches totalling 4 changed lines, between 2026 and 2026.

What is the latest CVE that changed merge?

CVE-2026-54531 (pypdf: Possible infinite loop when processing outlines/bookmarks in writer), published 2026-06-22, changed lines 2791 of pypdf/_writer.py.

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

py-pdf/pypdf has 52 CVEs with a located fix in total; 2 of them changed merge.

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.

RadicalNotion.AI

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py-pdf/pypdf

Function

merge

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

pypdf/_writer.py

Last patched June 22, 2026

2

CVEs

That changed this function

1

Distinct patches

Backports counted once

4

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

merge in py-pdf/pypdf was changed by 2 published CVE fixes in 2026, in 1 distinct patches that added or removed 4 lines in total.

py-pdf/pypdf has 52 CVEs with a located fix in total, so 4% of them touched this function.

CVEs that patched it

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

pypdf: Possible infinite loop when processing outlines/bookmarks in writer
CVE-2026-54531 · line 2791 · +1 −1
Medium · CVSS 6.9
EPSS 0.2%2026-06-22
pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction
CVE-2026-54530 · line 2791 · +1 −1
Medium · CVSS 6.9
EPSS 0.2%2026-06-22

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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 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 merge.

How many CVEs have patched merge?: 2 published CVEs changed merge in py-pdf/pypdf, in 1 distinct patches totalling 4 changed lines, between 2026 and 2026.
What is the latest CVE that changed merge?: CVE-2026-54531 (pypdf: Possible infinite loop when processing outlines/bookmarks in writer), published 2026-06-22, changed lines 2791 of pypdf/_writer.py.
How does merge compare to the rest of py-pdf/pypdf?: py-pdf/pypdf has 52 CVEs with a located fix in total; 2 of them changed merge.
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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