CVE-2026-88378: Critical severity QuickJS QuickJS vulnerability

Published Sep 24, 2026

Updated

QuickJS commit 04be24600 contains a heap out-of-bounds write condition in JSReadFunctionTag().

Affected Software

6 affected components

QuickJS QuickJS=04be24600

debian/quickjs*

debian/quickjs-ng*

debian/quickjs<=2025.04.26-1

debian/quickjs-ng<=0.17.0-1, <=0.18.0-1

Event History

Sep 24, 2026

CVE Published

via MITRE·12:00 AM

Data Sourced

via MITRE·12:00 AM

Description

Data Sourced

via NVD·05:17 PM

DescriptionSeverityWeakness

Data Sourced

via OSV·05:17 PM

DescriptionSeverityAffected Software

CVSS Score

9.8Critical

Critical Severity

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Security Metrics

Risk Score86

Severitycritical(9.8)

CWE

787

Timeline

PublishedSep 24, 2026

Updated

References

Company

Resources

Contact

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