Bug 2458736 (CVE-2026-5758)

Summary: CVE-2026-5758 protocol-buffers-schema: protocol-buffers-schema: Remote code execution via prototype pollution
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: aazores, abarbaro, adudiak, alizardo, cmah, dschmidt, eaguilar, ebaron, erezende, jchui, jhe, jkoehler, jlanda, jolong, kshier, ktsao, lphiri, nboldt, oaljalju, pjindal, psrna, simaishi, smcdonal, stcannon, teagle, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the `protocol-buffers-schema` JavaScript library. This vulnerability, known as prototype pollution, allows an attacker to inject malicious properties into an object's core definition. This could enable an attacker to change how an application behaves, bypass security measures, or cause the application to stop working (Denial of Service). In specific circumstances, this flaw could potentially lead to an attacker running unauthorized code on the system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-04-15 18:01:42 UTC
JavaScript is vulnerable to prototype pollution in Mafintosh's protocol-buffers-schema Version 3.6.0, where an attacker may alter the application logic, bypass security checks, cause a DoS or achieve remote code execution.