How many CVEs have patched __init__?

8 published CVEs changed __init__ in py-pdf/pypdf, in 11 distinct patches totalling 60 changed lines, between 2025 and 2026.

What is the latest CVE that changed __init__?

CVE-2026-48735 (pypdf: Manipulated XMP metadata streams can exhaust RAM), published 2026-05-28, changed lines 180 to 224 of pypdf/xmp.py.

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

py-pdf/pypdf has 52 CVEs with a located fix in total; 8 of them changed __init__.

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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Py Pdf
Pypdf
__init__

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Patched Functions
Py Pdf
Pypdf
__init__

__init__ in py-pdf/pypdf: Patched by 8 CVEs

py-pdf/pypdf

Function

5 files

init

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

Defined in 5 files

Last patched May 28, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2025–2026

Years

By CVE publication date

Overview

__init__ in py-pdf/pypdf was changed by 8 published CVE fixes between 2025 and 2026, in 11 distinct patches that added or removed 60 lines in total.

The name occurs in 5 files: pypdf/_reader.py, pypdf/xmp.py, pypdf/_writer.py, pypdf/_codecs/_codecs.py, pypdf/generic/_data_structures.py.

On this page

Overview
CVEs that patched it
Other functions in these files
Other hotspots in the repository
FAQ
References

py-pdf/pypdf has 52 CVEs with a located fix in total, so 15% of them touched this function.

CVEs that patched it

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

pypdf: Manipulated XMP metadata streams can exhaust RAM
CVE-2026-48735 · pypdf/xmp.py · lines 180–224 · +6 −0 in 2 hunks
Medium · CVSS 6.9
EPSS 0.2%2026-05-28
pypdf: Possible long runtimes for wrong size values in incremental mode
CVE-2026-41313 · pypdf/_writer.py · lines 181–242 · +13 −0 in 2 hunks
Medium · CVSS 6.8
EPSS 0.4%2026-04-22
pypdf: Manipulated XMP metadata entity declarations can exhaust RAM
CVE-2026-40260 · pypdf/xmp.py · line 207 · +1 −1
Medium · CVSS 6.9
EPSS 0.5%2026-04-16
pypdf has inefficient decoding of array-based streams
CVE-2026-33123 · pypdf/generic/_data_structures.py · lines 1184–1214 · +18 −2 in 2 hunks
Medium · CVSS 5.1
EPSS 0.4%2026-03-20
pypdf has possible long runtimes for malformed startxref
CVE-2026-22691 · pypdf/_reader.py · lines 118–138 · +7 −0 in 2 hunks
Low · CVSS 2.7
EPSS 0.4%2026-01-10
pypdf has possible long runtimes for missing /Root object with large /Size values
CVE-2026-22690 · pypdf/_reader.py · lines 118–138 · +7 −0 in 2 hunks
Low · CVSS 2.7
EPSS 0.4%2026-01-10
pypdf manipulated LZWDecode streams can exhaust RAM
CVE-2025-66019 · pypdf/_codecs/_codecs.py · line 53 · +1 −1
Medium · CVSS 6.6
EPSS 0.4%2025-11-25
pypdf manipulated LZWDecode streams can exhaust RAM
CVE-2025-62708 · pypdf/_codecs/_codecs.py · lines 53–55 · +3 −0
Medium · CVSS 6.6
EPSS 0.4%2025-10-22

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Other functions in these files

Functions in the same files that CVE fixes also changed.

1_read_inline_imagepypdf/generic/_data_structures.py2 CVEs · 4 patches2026
2_sanitize_pdf15_xref_stream_index_pairspypdf/_reader.py2 CVEs · 4 patches2026
3read_from_streampypdf/generic/_data_structures.py2 CVEs · 3 patches2026
4root_objectpypdf/_reader.py2 CVEs · 2 patches2026
5_find_pdf_objectspypdf/_reader.py2 CVEs · 2 patches2026
6_get_filtered_outlinepypdf/_writer.py2 CVEs · 1 patches2026
7mergepypdf/_writer.py2 CVEs · 1 patches2026
8__parse_content_streampypdf/generic/_data_structures.py1 CVEs · 2 patches2023

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 __init__.

How many CVEs have patched __init__?: 8 published CVEs changed __init__ in py-pdf/pypdf, in 11 distinct patches totalling 60 changed lines, between 2025 and 2026.
What is the latest CVE that changed __init__?: CVE-2026-48735 (pypdf: Manipulated XMP metadata streams can exhaust RAM), published 2026-05-28, changed lines 180 to 224 of pypdf/xmp.py.
How does __init__ compare to the rest of py-pdf/pypdf?: py-pdf/pypdf has 52 CVEs with a located fix in total; 8 of them changed __init__.
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/_reader.py on GitHub (opens in a new tab)
pypdf/xmp.py on GitHub (opens in a new tab)
pypdf/_writer.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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