CVE-2026-120439
QuickJS-NG before 0.16.0 contains an integer overflow in js_typed_array_sort() in quickjs.c that…
- Risk score
- 47/100
- CVSS
- 7.0 v3.1
- Published
- 2 Nov 2026
Open in the live forecast Today's forecast
What to know
- What it is
- QuickJS-NG before 0.16.0 contains an integer overflow in js_typed_array_sort() in quickjs.c that allows attackers to cause a heap buffer overflow on 32-bit hosts. Attackers who can run JavaScript can call TypedArray.prototype.sort with a comparator on a typed array near 2^30 elements, wrapping the allocation size and …
- Affected
- See advisory
- Fix
- Upgrade the product to 0.16.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.0 high
- Remotely exploitable without logging in
References
- https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L60032
- https://github.com/quickjs-ng/quickjs/commit/e93cca611908e12b824ec85fbee6b31a5ee61568
- https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0
- https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-9wv5-5cgr-grj6
- https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-typedarray-prototype-sort
Original description
QuickJS-NG before 0.16.0 contains an integer overflow in js_typed_array_sort() in quickjs.c that allows attackers to cause a heap buffer overflow on 32-bit hosts. Attackers who can run JavaScript can call TypedArray.prototype.sort with a comparator on a typed array near 2^30 elements, wrapping the allocation size and writing indices past the buffer to crash or potentially execute code.
Last activity 2 Nov 2026. Patch Forecast updates every hour.