CVE-2026-88378

Published Sep 24, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
QuickJS commit 04be24600 contains a heap out-of-bounds write condition in JS_ReadFunctionTag().

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
Title Heap Out‑of‑Bounds Write in QuickJS Function Tag Parsing
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

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

Type Values Removed Values Added
Title Heap Out‑of‑Bounds Write in QuickJS Function Tag Parsing
Weaknesses CWE-787
Type Values Removed Values Added
First Time appeared Bellard
Bellard quickjs
Vendors & Products Bellard
Bellard quickjs
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 29, 2026, 2:33 AM
Reserved
Sep 10, 2026, 12:00 AM
Status
Awaiting Analysis
Published
Sep 24, 2026, 5:17 PM
Modified
Sep 29, 2026, 3:17 AM