Integer Overflow or Wraparound Affecting bellard/quickjs package, versions [,2025.09.13)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-BELLARDQUICKJS-13610800
- published17 Oct 2025
- disclosed16 Oct 2025
- creditUnknown
Introduced: 16 Oct 2025
NewCVE-2025-62496 (opens in a new tab)How to fix?
Upgrade bellard/quickjs to version 2025.09.13 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the js_bigint_from_string() function when parsing strings with an excessively large number of digits. An attacker can cause a heap out-of-bounds write by supplying a crafted string input that triggers an integer overflow during memory allocation calculations.