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-20260729-73-0004

The vulnerability in python-PyPDF2 is related to unlimited resource distribution. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

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...

PYSEC-2026-3025 pypdf: Manipulated XMP metadata streams can exhaust RAM

Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. Patches This has been fixed in pypdf==6.12.1. Workarounds If you cannot upgrade yet, consider applying the change...

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...

UBUNTU-CVE-2026-59936

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.1, an attacker can craft a PDF with a page content stream containing a not terminated inline image, causing an infinite loop during inline image end marker detection such as when extracting page text. This issue is fixed in...

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...

python311-pypdf-6.13.0-1.1 on GA media (moderate)

python311-pypdf-6.13.0-1.1 on GA media Announcement ID: openSUSE-SU-2026:10974-1 Rating: moderate Cross-References: CVE-2026-48155 CVE-2026-48735 Affected Products: openSUSE Tumbleweed An update that solves 2 vulnerabilities can now be installed. Description: These are all security issues fixed i...

OPENSUSE-SU-2026:10974-1 python311-pypdf-6.13.0-1.1 on GA media

These are all security issues fixed in the python311-pypdf-6.13.0-1.1 package on the GA media of openSUSE Tumbleweed...

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...