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CVE-2026-88378

9.8 CRITICALpublic exploit available

Published 2026-09-24 · Updated 2026-09-29

AI risk analysis

Summary
The flaw is a heap out-of-bounds write condition in QuickJS, which can lead to arbitrary code execution if exploited. This matters because it allows attackers to execute malicious code, leading to severe system compromise.
Exploitability
Exploitation is moderately difficult requiring specific input to trigger the heap out-of-bounds condition. Precondition is the presence of vulnerable QuickJS code in the application.
Blast radius
If exploited, the impact could be severe, leading to full system compromise and potential data loss or theft.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to the fixed version 04be24600 or later.
rcewebjs

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-787

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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