Description
quickjs-ng through 0.9.0 has a missing length check in JS_ReadString for a string, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.
References (6)
Core 6
Core References
Release Notes
https://bellard.org/quickjs/Changelog
Exploit, Issue Tracking, Vendor Advisory
https://github.com/bellard/quickjs/issues/399
Exploit, Issue Tracking, Vendor Advisory
https://github.com/quickjs-ng/quickjs/issues/1018
Issue Tracking, Patch
https://github.com/quickjs-ng/quickjs/pull/1020
Scores
CVSS v3
5.6
EPSS
0.0009
EPSS Percentile
26.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (2)
bellard/quickjs
< 2025-04-26
quickjs-ng/quickjs
< 0.9.0
Published
Apr 27, 2025
Tracked Since
Feb 18, 2026