CVE-2025-62490

In quickjs, in js_print_object, when printing an array, the function first fetches the array length and then loops over it. The issue is, printing a value is not side-effect free. An attacker-defined callback could run during js_print_value, during which the array could get resized and len1 become out of bounds. This results in a use-after-free.A second instance occurs in the same function during printing of a map or set objects. The code iterates over ms->records list, but once again, elements could be removed from the list during js_print_value call.

The following products are affected by CVE-2025-62490 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-62490.

URL	Resource
https://bellard.org/quickjs/Changelog
https://issuetracker.google.com/434196651