PYSEC-2026-1828 pypdf has possible long runtimes for malformed startxref

Impact An attacker who exploits this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-reference table, PDF files with lots of whitespace characters become problematic. Only the non-strict reading mode is affected. Patches...

pypdf has possible long runtimes for malformed startxref

ImpactAn attacker who exploits this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-reference table, PDF files with lots of whitespace characters become problematic. Only the non-strict reading mode is affected...

CVE-2026-22691

A flaw was found in pypdf. A remote attacker can exploit this vulnerability by crafting a malicious PDF file with malformed startxref entries and excessive whitespace characters. This can cause excessively long processing times when rebuilding the cross-reference table in non-strict reading mode,...

SUSE CVE-2026-22691

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

CVE-2026-22691

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

UBUNTU-CVE-2026-22691

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

CVE-2026-22691

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

CVE-2026-22691

CVE-2026-22691 affects the Python PDF library pypdf prior to version 6.6.0 . The issue causes potentially long runtimes when parsing PDFs with malformed startxref entries, particularly for files with many whitespace characters, during cross-reference table rebuilding. Only the non-strict reading ...

CVE-2026-22691 pypdf has possible long runtimes for malformed startxref

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

CVE-2026-22691 pypdf has possible long runtimes for malformed startxref

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

CVE-2026-22691 pypdf has possible long runtimes for malformed startxref

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

EUVD-2026-1877

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

CVE-2026-22691

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

Linux Distros Unpatched Vulnerability : CVE-2026-22691

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 version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses...

CVE-2026-22691: Inefficient Regular Expression Complexity

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-referen...

pypdf security vulnerability

pypdf is py-pdf open source a free open source pure python PDF library . Able to split , merge , crop and convert pages of PDF files . pypdf versions prior to 6.6.0 has a security vulnerability , the vulnerability stems from the processing of incorrectly formatted startxref entries may generate a...

EUVD-2026-1691

pypdf has possible long runtimes for malformed startxref...

GHSA-4F6G-68PF-7VHV pypdf has possible long runtimes for malformed startxref

Impact An attacker who exploits this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-reference table, PDF files with lots of whitespace characters become problematic. Only the non-strict reading mode is affected. Patches...

pypdf has possible long runtimes for malformed startxref

Impact An attacker who exploits this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-reference table, PDF files with lots of whitespace characters become problematic. Only the non-strict reading mode is affected. Patches...

Regular Expression Denial of Service (ReDoS)

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 Regular Expression Denial of Service ReDoS in the flatten function. An attacker can cause excessive processing times by providing ...