CVE-2026-0821

HIGH

quickjs-ng quickjs < 0.11.0 - Heap-Based Buffer Overflow in js_typed_array_constructor

Title source: llm
STIX 2.1

Description

A vulnerability was determined in quickjs-ng quickjs up to 0.11.0. This vulnerability affects the function js_typed_array_constructor of the file quickjs.c. Executing a manipulation can lead to heap-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. This patch is called c5d80831e51e48a83eab16ea867be87f091783c5. A patch should be applied to remediate this issue.

References (8)

Core 8
Core References
Various Sources product
https://github.com/quickjs-ng/quickjs/
Third Party Advisory, VDB Entry vdb-entry technical-description
https://vuldb.com/?id.340355
Permissions Required, VDB Entry signature permissions-required
https://vuldb.com/?ctiid.340355
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.731780
Exploit, Issue Tracking, Vendor Advisory issue-tracking
https://github.com/quickjs-ng/quickjs/issues/1296
Issue Tracking issue-tracking
https://github.com/quickjs-ng/quickjs/pull/1299
Exploit, Issue Tracking, Vendor Advisory exploit issue-tracking
https://github.com/quickjs-ng/quickjs/issues/1296#issue-3780003395

Scores

CVSS v3 7.3
EPSS 0.0044
EPSS Percentile 35.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-119 CWE-122
Status published
Products (1)
quickjs-ng/quickjs < 0.11.0
Published Jan 10, 2026
Tracked Since Feb 18, 2026