Bug 2540250 (CVE-2026-88362)

Summary: CVE-2026-88362 mujs: mujs: Denial of Service via out-of-range numeric conversion
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: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in MuJS. An attacker can trigger a Denial of Service (DoS) by providing specially crafted JavaScript input containing an excessively large array index. This flaw causes an out-of-range numeric value to be converted to an integer without proper validation, leading to undefined behavior and an unexpected process crash.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2543055, 2543056    
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Description OSIDB Bzimport 2026-09-24 15:53:52 UTC
MuJS e892c9fdb contains an incorrect numeric conversion vulnerability in jsR_isindex() in jsrun.c. A specially crafted JavaScript input containing an excessively large numeric array index can cause an out-of-range floating-point value to be converted to an integer without proper range validation. This results in undefined behavior and can cause process termination, leading to denial of service.