Use After Free Affecting quickjs-ng/quickjs package, versions [0,0.13.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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- published12 Mar 2026
- disclosed12 Mar 2026
- creditUnknown
Introduced: 12 Mar 2026
CVE-2026-3979 (opens in a new tab)How to fix?
Upgrade quickjs-ng/quickjs to version 0.13.0 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the js_iterator_concat_return() function. An attacker can achieve unauthorized access to freed memory by executing crafted code locally.