Bug 2468461 (CVE-2026-42310)

Summary: CVE-2026-42310 Pillow: Pillow: Denial of Service via malicious PDF processing
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: alinfoot, anpicker, anthomas, bbrownin, bdettelb, bparees, cmyers, derez, dfreiber, dnakabaa, doconnor, drow, dschmidt, dtrifiro, ehelms, erezende, ggainey, hasun, jburrell, jfula, jkoehler, jlanda, jmitchel, jowilson, juwatts, jwong, kaycoth, kshier, lcouzens, ljawale, lphiri, luizcosta, mhulan, nmoumoul, nweather, nyancey, omaciel, ometelka, osousa, pcreech, ptisnovs, rbobbitt, rbryant, rchan, rhel-process-autobot, sdawley, simaishi, smallamp, smcdonal, stcannon, syedriko, teagle, tmalecek, ttakamiy, vkumar, watson-tool-maintainers, weaton, xdharmai, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Pillow, a Python imaging library. A remote attacker could supply a specially crafted malicious PDF file, causing the application to hang indefinitely and consume 100% CPU. This vulnerability leads to 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 2026-05-09 06:01:44 UTC
Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0.