CVE-2026-33699 pypdf: Possible infinite loop during recovery attempts in DictionaryObject.read_from_stream

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.2 have a vulnerability in which an attacker can craft a PDF which leads to an infinite loop. This requires reading a file in non-strict mode. This has been fixed in pypdf 6.9.2. If users cannot upgrade yet, consider...

CVE-2026-33699

CVE-2026-33699 affects the pypdf library (Python), with versions prior to 6.9.2 vulnerable to an infinite loop when reading a PDF in non-strict mode. The root cause is within DictionaryObject.read_from_stream processing, leading to potential hang. A fix is available in pypdf 6.9.2, and multiple O...

Infinite loop

Overview pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files Affected versions of this package are vulnerable to Infinite loop in the readfromstream function of DictionaryObject. An attacker can cause the application to enter an infinite loop ...

pypdf: Possible infinite loop during recovery attempts in DictionaryObject.read_from_stream

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading a file in non-strict mode. Patches This has been fixed in pypdf==6.9.2. Workarounds If users cannot upgrade yet, consider applying the changes from PR 3693...

python311-pypdf-6.9.1-1.1 on GA media (moderate)

python311-pypdf-6.9.1-1.1 on GA media Announcement ID: openSUSE-SU-2026:10403-1 Rating: moderate Cross-References: CVE-2026-33123 Affected Products: openSUSE Tumbleweed An update that solves one vulnerability can now be installed. Description: These are all security issues fixed in the...

OPENSUSE-SU-2026:10403-1 python311-pypdf-6.9.1-1.1 on GA media

These are all security issues fixed in the python311-pypdf-6.9.1-1.1 package on the GA media of openSUSE Tumbleweed...

Denial Of Service

pypdf is vulnerable to Denial of Service. The vulnerability is due to inefficient decoding of array-based streams, where accessing an array-based stream with many entries leads to long runtimes and large memory usage, and attackers can exploit it by crafting a malicious PDF with a large array-bas...

CVE-2026-33123

A flaw was found in pypdf, a pure-python PDF library. An attacker can craft a malicious PDF file that, when processed, leads to excessive resource consumption, causing long runtimes and high memory usage. This can result in a Denial of Service DoS condition, making the application unresponsive or...

Security Bulletin: IBM watsonx.data integration has vulnerabilities due to open source packages (CVE-2025-55197)

Summary Open source packages are used as part of the overall processing in IBM watsonx.data integration. Vulnerability Details CVEID:CVE-2025-55197 DESCRIPTION: pypdf is a free and open-source pure-python PDF library. Prior to version 6.0.0, an attacker can craft a PDF which leads to the RAM bein...

CVE-2026-33123

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1...

CVE-2026-33123

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1...

UBUNTU-CVE-2026-33123

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1...

CVE-2026-33123 pypdf has inefficient decoding of array-based streams

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1...

CVE-2026-33123 pypdf has inefficient decoding of array-based streams

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1...

CVE-2026-33123

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1...

CVE-2026-33123

CVE-2026-33123 affects the open-source Python PDF library pypdf (prior to v6.9.1). The issue is caused by inefficient decoding of array-based streams, which can lead to excessive CPU time and high memory usage when processing specially crafted PDFs. Impact is described as long runtimes and/or lar...

CVE-2026-33123

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1...

pypdf 安全漏洞

pypdf is an open-source, free Python library for handling PDF files. It allows for splitting, merging, cropping, and converting pages within PDF files. Versions of pypdf prior to 6.9.1 contained security vulnerabilities, which stemmed from defects in processing malicious PDFs. These vulnerabiliti...

Linux Distros Unpatched Vulnerability : CVE-2026-33123

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. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or...

Inefficient Algorithmic Complexity

Overview pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the decoding process of array-based streams. An attacker can cause excessive resource...