CVE-2026-88362

Out-of-Range Numeric Index Leading to Undefined Behavior and Potential DoS in MuJS Engine

Published Sep 24, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Ghostscript
Ghostscript mujs
Vendors & Products Ghostscript
Ghostscript mujs
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Out-of-Range Numeric Index Leading to Undefined Behavior and Potential DoS in MuJS Engine
Type Values Removed Values Added
Weaknesses CWE-681
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Type Values Removed Values Added
Description 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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 25, 2026, 4:15 PM
Reserved
Sep 10, 2026, 12:00 AM
Status
Deferred
Published
Sep 24, 2026, 4:17 PM
Modified
Sep 25, 2026, 5:17 PM