How many CVEs have patched decode?

5 published CVEs changed decode in py-pdf/pypdf, in 10 distinct patches totalling 107 changed lines, between 2025 and 2026.

What is the latest CVE that changed decode?

CVE-2026-41314 (pypdf: Manipulated FlateDecode image dimensions can exhaust RAM), published 2026-04-22, changed lines 207 to 227 of pypdf/filters.py.

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

py-pdf/pypdf has 52 CVEs with a located fix in total; 5 of them changed decode.

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

Log in Create an account

py-pdf/pypdf

Function

2 files

decode

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

Defined in 2 files

Last patched April 22, 2026

5

CVEs

That changed this function

10

Distinct patches

Backports counted once

107

Lines changed

Added plus removed

2025–2026

Years

By CVE publication date

Overview

decode in py-pdf/pypdf was changed by 5 published CVE fixes between 2025 and 2026, in 10 distinct patches that added or removed 107 lines in total.

The name occurs in 2 files: pypdf/filters.py, pypdf/_codecs/_codecs.py.

py-pdf/pypdf has 52 CVEs with a located fix in total, so 10% of them touched this function.

CVEs that patched it

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

pypdf: Manipulated FlateDecode image dimensions can exhaust RAM
CVE-2026-41314 · pypdf/filters.py · lines 207–227 · +9 −5
Medium · CVSS 6.8
EPSS 0.4%2026-04-22
pypdf: Manipulated FlateDecode predictor parameters can exhaust RAM
CVE-2026-41312 · pypdf/filters.py · lines 207–227 · +9 −5
Medium · CVSS 6.8
EPSS 0.4%2026-04-22
pypdf: Inefficient decoding of ASCIIHexDecode streams

CVE-2026-28804 · pypdf/filters.py · lines 347–366 · +20 −28

Medium · CVSS 6.9

EPSS 0.5%2026-03-06

Manipulated RunLengthDecode streams can exhaust RAM

CVE-2026-28351 · pypdf/filters.py · lines 412–449 · +6 −2 in 3 hunks

Medium · CVSS 6.9

EPSS 0.5%2026-02-27

pypdf manipulated LZWDecode streams can exhaust RAM

CVE-2025-62708 · pypdf/_codecs/_codecs.py · lines 224–264 · +14 −7 in 2 hunks

Medium · CVSS 6.6

EPSS 0.4%2025-10-22

pypdf manipulated LZWDecode streams can exhaust RAM

CVE-2025-62708 · pypdf/filters.py · line 439 · +1 −1

Medium · CVSS 6.6

EPSS 0.4%2025-10-22

Get an alert when the next CVE fix lands in py-pdf/pypdf, with the patched functions.

Monitor pypdf CVEs

Other functions in these files

Functions in the same files that CVE fixes also changed.

Other hotspots in the repository

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

_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 extract_xform_text3 CVEs · pypdf/_page.py

All patched functions in py-pdf/pypdf

Frequently asked questions

Common questions about CVE fixes to decode.

How many CVEs have patched decode?: 5 published CVEs changed decode in py-pdf/pypdf, in 10 distinct patches totalling 107 changed lines, between 2025 and 2026.
What is the latest CVE that changed decode?: CVE-2026-41314 (pypdf: Manipulated FlateDecode image dimensions can exhaust RAM), published 2026-04-22, changed lines 207 to 227 of pypdf/filters.py.
How does decode compare to the rest of py-pdf/pypdf?: py-pdf/pypdf has 52 CVEs with a located fix in total; 5 of them changed decode.
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.

Track py-pdf/pypdf CVEs

Get an alert when a new CVE lands in this repository, with the patched functions and AI-written remediation guidance.

Create an account See pricing