Denial of Service in QuickJS JavaScript Engine by Bellard
CVE-2025-69654

7.5HIGH

Key Information:

Vendor

Bellard

Status
QuickJS
Vendor
CVE Published:
6 March 2026

What is CVE-2025-69654?

A crafted JavaScript input executed with the QuickJS JavaScript engine version 2025-09-13 can result in an out-of-memory condition when using the -m option alongside a low memory limit. This bug leads to an assertion failure during the runtime cleanup phase, causing the application to abort due to improper garbage collection of the object list. This results in a denial of service, impacting the availability and performance of applications relying on QuickJS.

References

https://github.com/bellard/quickjs/issues/468

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.