CVE-2026-0821
quickjs-ng quickjs quickjs.c js_typed_array_constructor heap-based overflow
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jan 10, 2026
- Updated
- Feb 23, 2026
- Reserved
- Jan 9, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 7.3 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 3.0 | 7.3 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 7.5 High | AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
quickjsquickjs-ng |
|
References
- VDB-340355 | quickjs-ng quickjs quickjs.c js_typed_array_constructor heap-based overflowvdb-entrytechnical-description
- VDB-340355 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #731780 | quickjs-ng quickjs v0.11.0 Heap-based Buffer Overflowthird-party-advisory
- https://github.com/quickjs-ng/quickjs/issues/1296issue-tracking
- https://github.com/quickjs-ng/quickjs/pull/1299issue-tracking
- https://github.com/quickjs-ng/quickjs/issues/1296#issue-3780003395exploitissue-tracking
- https://github.com/quickjs-ng/quickjs/commit/c5d80831e51e48a83eab16ea867be87f091783c5patch
- https://github.com/quickjs-ng/quickjs/product
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