Bug 2544270 (CVE-2026-102994)

Summary: CVE-2026-102994 pypdf: pypdf: Denial of Service via crafted indirect object tokens in PDF files
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: anpicker, bbrownin, blitton, bparees, doconnor, dschmidt, ebourniv, hasun, ikhan, jfula, jlanda, jowilson, kshier, mbarnett, nyancey, ometelka, ptisnovs, rbobbitt, sbunciak, simaishi, stcannon, syedriko, xdharmai, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in pypdf. By supplying a specially crafted PDF document containing excessively long indirect object identifiers or generation tokens without whitespace, a remote attacker can trigger unbounded input scanning during parsing. This issue causes significant processing delays and excessive resource consumption, leading to a Denial of Service (DoS) and application unavailability.
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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 2026-09-30 20:26:32 UTC
pypdf is a free and open-source pure-python PDF library. Prior to 6.18.0, a crafted PDF containing indirect-object identifiers or generation-number tokens that continue for a long time without whitespace can cause pypdf/_reader.py and pypdf/generic/_base.py to scan excessive input through read_until_whitespace, resulting in long runtimes and application unavailability. This issue is fixed in version 6.18.0.