Integer Underflow (Wrap 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-13610852
- published17 Oct 2025
- disclosed16 Oct 2025
- creditUnknown
Introduced: 16 Oct 2025
NewCVE-2025-62495 (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 Underflow (Wrap or Wraparound) due to improper handling of buffer size calculations in the libregexp engine. An attacker can achieve out-of-bounds memory writes by supplying a specially crafted regular expression that causes an integer overflow during offset computation.