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...

PT-2026-59630

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop if parse content stream is executed. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case if th...

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...

SUSE CVE-2026-59935

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issu...

Linux Distros Unpatched Vulnerability : CVE-2026-59937

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 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause...

OPENSUSE-SU-2026:11238-1 python313-pypdf-6.14.2-1.1 on GA media

These are all security issues fixed in the python313-pypdf-6.14.2-1.1 package on the GA media of openSUSE Tumbleweed...

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...

CVE-2026-59937 pypdf: Possible long runtimes for repeated malformed cross-reference entries

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. This issue is fixed in version 6.14.0...

PT-2026-56546

Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.14.2 Description An attacker can craft a PDF file with a page content stream containing an unterminated inline image that utilizes ASCII85 or ASCIIHex filters. This leads to an infinite loop during the parsing process...

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...

NULL Pointer Dereference

Overview muhammara is a Create, read and modify PDF files and streams. A drop in replacement for hummusjs PDF library Affected versions of this package are vulnerable to NULL Pointer Dereference in the CreateFilterForStream process when handling PDF streams with /Filter /LZWDecode and a...

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...

UBUNTU-CVE-2026-54651

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, 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. This vulnerability is fixed in 6.13.1...

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...

CVE-2026-54651: Loop with Unreachable Exit Condition

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.1, 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. This vulnerability is fixed in 6.13.1...

Debian dsa-6334 : gir1.2-poppler-0.18 - security update

The remote Debian 12 / 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6334 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6334-1 [email protected]...

CVE-2026-9958

An use after free flaw was found in the PDFium component of the Chromium browser. Upstream bugs: https://code.google.com/p/chromium/issues/detail?id=504555886...

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...