Bug 2482741 (CVE-2026-48735)

Summary: CVE-2026-48735 pypdf: pypdf: Denial of Service via crafted PDF with large XMP metadata
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, bdettelb, bparees, doconnor, dschmidt, erezende, hasun, jfula, jkoehler, jlanda, jowilson, kshier, lphiri, nyancey, ometelka, ptisnovs, simaishi, smcdonal, stcannon, syedriko, teagle, xdharmai, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in pypdf, a pure-python PDF library. An attacker could craft a malicious PDF file containing large XMP metadata. Processing this crafted PDF would lead to excessive memory consumption, potentially causing a denial of service (DoS) for the affected system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2484931, 2484930    
Bug Blocks:    

Description OSIDB Bzimport 2026-05-28 16:02:11 UTC
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.