Bug 2441490 (CVE-2026-27024)

Summary: CVE-2026-27024 pypdf: pypdf: Denial of Service via crafted PDF with TreeObject outlines
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: anpicker, bbrownin, bparees, hasun, jfula, jkoehler, jowilson, jwong, lphiri, nyancey, omaciel, ometelka, ptisnovs, syedriko, teagle, ttakamiy, xdharmai
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in pypdf. An attacker can craft a malicious PDF file that, when processed, leads to an infinite loop. This occurs when accessing specific elements within the PDF structure, such as the children of a TreeObject, which can be part of outlines. This vulnerability results in a Denial of Service (DoS), making the application unresponsive.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-02-20 22:01:33 UTC
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires accessing the children of a TreeObject, for example as part of outlines. This vulnerability is fixed in 6.7.1.