Inefficient Decoding

pypdf is vulnerable to inefficient decoding of ASCIIHexDecode streams. The vulnerability is due to an attacker being able to craft a PDF which leads to long runtimes, where accessing a stream uses the /ASCIIHexDecode filter and can be exploited by attackers to cause a denial of service...

Linux Distros Unpatched Vulnerability : CVE-2026-28804

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 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long...

CVE-2026-28804

A flaw was found in pypdf, a pure-python PDF library. A remote attacker can exploit this vulnerability by crafting a malicious PDF file that utilizes the /ASCIIHexDecode filter. Processing this specially crafted PDF can lead to excessively long runtimes, resulting in a Denial of Service DoS for t...

DEBIAN-CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

UBUNTU-CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

CVE-2026-28804

CVE-2026-28804 affects pypdf prior to 6.7.5. A crafted PDF that uses the /ASCIIHexDecode filter can cause long runtimes (DoS) when decoding streams. This vulnerability is resolved by upgrading to pypdf 6.7.5 or later, as noted in multiple sources (NVD/NIST entry, IBM Watson Discovery Cartridge ad...

a-data-processing (0.0.1), ab-data-processing (0.0.1) +610 more potentially affected by CVE-2026-28804 via pypdf (>=3.1.0, <=6.7.4)

pypdf PYPI version =3.1.0, =0.1.1, =0.9.1, =0.0.2, =0.0.1, =0.1.4, =0.1.0a0.dev0, =0.2.0a0, =0.0.1, =0.0.4, =0.0.9 and more Source cves: CVE-2026-28804 Source advisory: MEND:CVE-2026-28804...

CVE-2026-28804 pypdf: Inefficient decoding of ASCIIHexDecode streams

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

CVE-2026-28804 pypdf: Inefficient decoding of ASCIIHexDecode streams

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

CVE-2026-28804 pypdf: Inefficient decoding of ASCIIHexDecode streams

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

pypdf security vulnerability

pypdf is an open-source, free Python library developed by py-pdf. It allows for splitting, merging, cropping, and converting pages within PDF files. Prior to version 6.7.5, pypdf had a security vulnerability. This vulnerability stemmed from the use of the /ASCIIHexDecode filter when accessing...

📄 pypdf Memory Exhaustion / Denial of Service

pypdf versions prior to 6.7.3 were vulnerable to a denial of service condition caused by uncontrolled memory allocation during decompression of XFA streams. An attacker could craft a malicious PDF file containing a highly compressed stream using /FlateDecode...

CVE-2026-28804: Inefficient Algorithmic Complexity

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

CVE-2026-28804

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, 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. This issue has been patched in version 6.7.5...

Linux Distros Unpatched Vulnerability : CVE-2026-27888

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 6.7.3, an attacker who uses this vulnerability can craft a PDF which leads to the RAM being...

aiagents4pharma (>=0.0.0, <=1.49.1), aiagents4pharma-ansh (0.0.0) +51 more potentially affected by CVE-2026-28804 via pypdf (>=6.0.0, <=6.7.4)

pypdf PYPI version =6.0.0, =0.0.0, =1.0.0a3, =0.2.0, =0.2.0, =0.0.3, =6.2.61, =1.0.20, =0.12.0, =2.4.23, =1.4.0, =1.4.1 and more Source cves: CVE-2026-28804 Source advisory: OSV:GHSA-9M86-7PMV-2852...

aiagents4pharma (>=0.0.0, <=1.49.1), aiagents4pharma-ansh (0.0.0) +51 more potentially affected by CVE-2026-28804 via pypdf (>=6.0.0, <=6.7.4)

pypdf PYPI version =6.0.0, =0.0.0, =1.0.0a3, =0.2.0, =0.2.0, =0.0.3, =6.2.61, =1.0.20, =0.12.0, =2.4.23, =1.4.0, =1.4.1 and more Source cves: CVE-2026-28804 Source advisory: GHSA-9M86-7PMV-2852...

agentc-llamaindex (0.2.5a2), agentia (>=0.0.2, <=0.0.10) +245 more potentially affected by CVE-2026-28804 via pypdf (5.9.0)

pypdf PYPI version 5.9.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - agentc-llamaindex 0.2.5a2 - agentia =0.0.2, =0.0.1, =0.1.4, =0.1.0a0.dev0, =0.2.0a0, =0.11.2, =1.1.0a20250429, =3.1.8, =1.0.5, =1.0.0, =0.1.0, =1.1.1,...