CVE-2026-84309

pypdf is a free and open-source pure-python PDF library. Prior to 6.16.0, an attacker can craft a PDF whose cyclic tree structure causes pypdf/generic/datastructures.py TreeObject.insertchild to follow /Next links indefinitely when a writing code path inserts a child, producing an infinite loop...

UBUNTU-CVE-2026-84309

pypdf is a free and open-source pure-python PDF library. Prior to 6.16.0, an attacker can craft a PDF whose cyclic tree structure causes pypdf/generic/datastructures.py TreeObject.insertchild to follow /Next links indefinitely when a writing code path inserts a child, producing an infinite loop...

ROOT-APP-PYPI-CVE-2026-59937 CVE-2026-59937 in pypdf - Patched by Root

Root has patched CVE-2026-59937 in the pypdf package for Root:PyPI. Multiple fixed versions available...

GHSA-FP3F-MC75-235C pypdf: Possible large memory usage for large /ToUnicode streams

Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. Patches This has been fixed in pypdf==6.15.0. Workarounds If you cannot...

ROS-20260729-73-0006

The vulnerability in python-PyPDF2 relates to the execution of a loop with an unreachable exit condition. Exploiting this vulnerability could allow an attacker to cause a service failure...

ROS-20260728-73-0019

The vulnerability in python-PyPDF2 is related to excessive iteration. Exploiting this vulnerability can allow an attacker to cause a service failure...

EUVD-2026-42343

pypdf: Possible large memory usage for wrong image dimensions...

PYSEC-2026-3018 pypdf: Possible infinite loop when processing threads/articles in writer

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with threads/articles into a writer. Patches This has been fixed in pypdf==6.13.1. Workarounds If users cannot upgrade yet, consider applying the changes from PR 3839...

Uncontrolled Resource Consumption (Infinite Loop)

pypdf is vulnerable to Uncontrolled Resource Consumption Infinite Loop. The vulnerability is due to improper handling of crafted PDF files containing threads/articles during the merge operation, which allows an attacker to trigger an infinite loop by supplying a malicious PDF, resulting in a...

DEBIAN-CVE-2026-59938

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with declared image size values that are much too large compared to the actual data, causing large memory usage in pypdf image parsing. This issue is fixed in version 6.14.0...

PyPDF's Manipulated FlateDecode streams can exhaust RAM

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires just reading the file if a series of FlateDecode filters is used on a malicious cross-reference stream. Other content streams are affected on explicit access. PatchesThis has been...

python311-pypdf-6.14.0-1.1 on GA media (moderate)

python311-pypdf-6.14.0-1.1 on GA media Announcement ID: openSUSE-SU-2026:11113-1 Rating: moderate Cross-References: CVE-2026-54651 CVSS scores: CVE-2026-54651 SUSE : 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVE-2026-54651 SUSE : 6.7...

UBUNTU-CVE-2026-49460

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2...

EUVD-2026-38354

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. This vulnerability is fixed in 6.13.0...

Linux Distros Unpatched Vulnerability : CVE-2026-48155

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory...

The vulnerability of the Python library for working with PDF files, PyPDF, arises from improper processing of highly compressed input data. This vulnerability allows attackers to cause service failures.

The vulnerability of the Python library for working with PDF files, PyPDF, is related to improper processing of highly compressed input data. Exploiting this vulnerability can allow a malicious actor to cause service failures...

The vulnerability of the PyPDF2 library for processing PDF files, which stems from the use of a regular expression with inefficient computational complexity, allows attackers to trigger service failures.

The vulnerability of the PyPDF2 library for processing PDF files relates to the use of a regular expression with inefficient computational complexity. Exploiting this vulnerability could allow an attacker operating remotely to cause service interruptions...

The vulnerability of the PyPDF2 library for processing PDF files, related to the execution of a loop with an unreachable exit condition, allows a hacker to cause a service failure.

The vulnerability of the PyPDF2 library for processing PDF files relates to the execution of a loop with an unreachable exit condition. Exploiting this vulnerability could allow a malicious actor to cause service failures...

The vulnerability of the PDF processing library PyPDF2, related to excessive iteration, allows a hacker to trigger a service failure.

The vulnerability of the PyPDF2 library for processing PDF files is related to excessive iteration. Exploiting this vulnerability can allow an attacker to cause a service failure...

The vulnerability of the Python library for working with PDF files, PyPDF, related to uncontrolled resource consumption, allows a hacker to cause a service failure.

The vulnerability of the Python library for working with PDF files, PyPDF, is related to an uncontrolled resource consumption. Exploiting this vulnerability could allow a malicious actor to cause service interruptions...