Dashboard / CVE-2026-120440

CVE-2026-120440

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 74/100
Published: 2026-11-02 Modified: 2026-11-02 First seen: 2026-11-02 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: None
VI: None
VA: Low

Description

QuickJS-NG before 0.16.0 contains a memory leak vulnerability in js_atomics_store() in quickjs.c that fails to free the converted value when returning a RangeError. Attackers running JavaScript can repeatedly call Atomics.store with a valueOf that detaches or shrinks the buffer to exhaust heap memory and cause denial of service.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
quickjs-ng QuickJS-NG 0 < 0.16.0
quickjs-ng QuickJS-NG 0 < 0.16.0

References & Advisories (5)

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.47%
Raw Score 0.004690
Percentile 41.1%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00469
2026-11-12
0.00469
2026-11-10
0.00469
2026-11-09
0.00469
2026-11-08
0.00469
2026-11-07
0.00469
2026-11-06
0.00469
2026-11-05
0.00469
2026-11-04
0.00469
2026-11-03
0.00469

Intelligence Sources

mitre ref →
nvd ref →

External Links