177 matches found
EUVD-2026-42344
pypdf: Possible long runtimes for repeated malformed cross-reference entries...
GHSA-55H5-XMCQ-C37V pypdf: Possible long runtimes for repeated malformed cross-reference entries
Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with repeated malformed cross-reference streams. Patches This has been fixed in pypdf==6.14.0. Workarounds If you cannot upgrade yet, consider applying the changes fr...
PYSEC-2026-3004 pypdf: Possible long runtimes for zero-only width values in cross-reference streamsuntimes for zero-only width values in cross-reference streams
Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W 0 0 0 values and large /Size values. Patches This has been fixed in pypdf==6.12.0. Workarounds If developers are unable to upgrade their apps immediately, the...
Pillow has a PDF Parsing Trailer Infinite Loop (DoS)
ImpactAn attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. PatchesPatched version: 12.2.0.PdfParser introduced in Pillow 4.2.0 follows Prev pointers in PDF trailers to read cross-reference sections. If...
PYSEC-2026-3021 pypdf has long runtimes for wrong size values in cross-reference and object streams
Impact An attacker who uses this vulnerability 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. Patches This has been fixed in pypdf==6.10.1. Workarounds If you cannot upgrade yet,...
PYSEC-2026-3005 pypdf has a possible infinite loop when loading circular /Prev entries in cross-reference streams
Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. Patches This has been fixed in pypdf==6.7.2. Workarounds If users cannot upgrade yet, consider applying the changes from PR 3655...
CVE-2026-59937
A flaw was found in pypdf, a pure-python PDF library. A remote attacker could exploit this vulnerability by crafting a malicious PDF file containing repeated malformed cross-reference streams. This could cause the pypdf library to spend excessive time recovering broken cross-reference table...
Excessive Iteration
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 Excessive Iteration via the processing of repeated malformed cross-reference streams. An attacker can cause excessive resource...
DEBIAN-CVE-2026-59937
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...
CVE-2026-59937
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...
CVE-2026-59937
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...
CVE-2026-59937
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...
CVE-2026-59937
CVE-2026-59937 affects the Python PDF library pypdf prior to 6.14.0. A crafted PDF with repeated malformed cross-reference streams can cause pypdf to spend long runtimes recovering broken cross-reference table entries, resulting in high impact on availability. The 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...
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...
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-2026-56527
Name of the Vulnerable Software and Affected Versions pypdf versions prior to 6.14.0 Description An attacker can craft a PDF containing repeated malformed cross-reference streams. This causes the library to spend excessive runtimes attempting to recover broken cross-reference table entries, leadi...
PyPDF2 quadratic runtime with malformed PDF missing xref marker
ImpactAn 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. Patcheshttps://github.com/py-pdf/pypdf/pull/808 WorkaroundsIs...
PYSEC-2026-1837 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 ...
