CVE-2026-119208 pypdf: Possible long runtimes/large memory usage for encrypted PDF files

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Even after successful decryption, page-count retrieval trust...

CVE-2026-119206

The pypdf Python PDF library is vulnerable to uncontrolled resource consumption (CWE-400) in versions prior to 6.21.3 . A crafted PDF containing a flat page-label number tree with many ranges can cause the page_labels property to take excessive time. This occurs because the property resolves each...

CVE-2026-119206 pypdf: Possible long runtimes when retrieving page labels

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can take excessive time to retrieve page labels from a crafted PDF containing a flat page-label number tree with many ranges. The pagelabels property resolves each page independently and repeatedly scans the same /Num...

pypdf: Possible long runtimes with large amount of embedded files

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing the embedded files through the dictionary-based API. PatchesThis has been fixed in pypdf==6.19.0. WorkaroundsIf you cannot upgrade yet, consider applying the changes from PR 4081...

PYSEC-2026-4159 pypdf: Possible long runtimes with large amount of embedded files

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing the embedded files through the dictionary-based API. Patches This has been fixed in pypdf==6.19.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR 4081...

PYSEC-2026-3911 pypdf: Possible long runtimes/large memory usage when extracting XForm objects

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires extracting the text of a page with lots of XForm objects, where some of them might be re-used. Patches This has been fixed in pypdf==6.16.1. Workarounds If you...

GHSA-FC8X-2RWW-XW9M pypdf: Inefficient handling of non-whitespace inputs in read_until_whitespace

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires a call to readuntilwhitespace with an input which does not have whitespace for a long time. Patches This has been fixed in pypdf==6.15.0. Workarounds If you cannot upgrade yet, consider...

pypdf: Possible long runtimes/large memory usage when retrieving outlines

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires accessing the outlines of a document with either lots of entries or nested outlines with long re-used nesting paths. Patches This has been fixed in pypdf==6.16.1...

Security update for python-PyPDF2 (moderate)

openSUSE security update: security update for python-pypdf2 ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21589-1 Rating: moderate References: bsc1271146 bsc1271147 Cross-References: CVE-2026-59936 CVE-2026-59937 Affected Products: openSUSE Leap...

PT-2026-69116

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.15.0 Description A crafted PDF can cause long runtimes and large memory consumption during text extraction. This occurs when the Font. collect cid character widths function in pypdf/ font.py expands unusually large CI...

PT-2026-59636

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. Patches This has been fixed in pypdf==6.7.5. Workarounds If you cannot upgrade yet, consider applying the changes from PR 3666...

Maestro 0.17.3

Maestro is a cross-platform desktop app for orchestrating your fleet of AI agents and projects. It's a high-velocity solution for hackers who are juggling multiple projects in parallel. Designed for power users who live on the keyboard and rarely touch the mouse. Collaborate with AI to create...

Maestro 0.17.1

Maestro is a cross-platform desktop app for orchestrating your fleet of AI agents and projects. It's a high-velocity solution for hackers who are juggling multiple projects in parallel. Designed for power users who live on the keyboard and rarely touch the mouse. Collaborate with AI to create...

CVE-2026-41168

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large "/Size" values or object streams with wrong large "/N" values. Thi...

SUSE 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 security vulnerability

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...

G_variant_byteswap() can take a long time with some non-normal inputs

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PyPDF2 quadratic runtime with malformed PDF missing xref marker

Impact An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. Patches https://github.com/py-pdf/pypdf/pull/808 Workarounds ...

CVE-2023-36810

pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of t...

Design/Logic Flaw

pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of t...