Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-07-08T17:24:29 pypdf: pypdf: Possible large memory usage for wrong image dimensions 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CWE-770

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.

A flaw was found in pypdf, a free and open-source pure-python PDF library. An attacker can exploit this vulnerability by crafting a malicious PDF file with image size values that are significantly larger than the actual embedded image data, causing pypdf to allocate large amounts of memory when processing the file.

Moderate: A flaw in the pypdf library allows an attacker to craft a malicious PDF with oversized image declarations, leading to excessive memory consumption during parsing. This could result in a denial of service on systems processing untrusted PDF files. Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Exploit Intelligence Fix deferred exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 OpenShift Lightspeed Fix deferred openshift-lightspeed/lightspeed-ocp-rag-rhel9 OpenShift Lightspeed Fix deferred openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-25/lightspeed-chatbot-rhel8 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-cuda-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-gaudi-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-rocm-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/disk-image-cuda-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-llama-stack-core-rhel9 Red Hat Quay 3 Fix deferred quay/quay-rhel8 Red Hat Quay 3 Fix deferred quay/quay-rhel9 https://www.cve.org/CVERecord?id=CVE-2026-59938 https://nvd.nist.gov/vuln/detail/CVE-2026-59938 https://github.com/py-pdf/pypdf/commit/c64583be16b8e8763d8777075f8ecbf382014b7a https://github.com/py-pdf/pypdf/pull/3888 https://github.com/py-pdf/pypdf/releases/tag/6.14.0 https://github.com/py-pdf/pypdf/security/advisories/GHSA-5qjq-93h5-hrgp