Access of Resource Using Incompatible Type ('Type Confusion') Affecting v8/v8 package, versions [,14.7.132-pgo)
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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- published23 Mar 2026
- disclosed20 Mar 2026
- creditZhenpeng (Leo) Lin at depthfirst
Introduced: 20 Mar 2026
CVE-2026-4457 (opens in a new tab)How to fix?
Upgrade v8/v8 to version 14.7.132-pgo or higher.
Overview
Affected versions of this package are vulnerable to Access of Resource Using Incompatible Type ('Type Confusion') in the IsOnlyUserOf function. An attacker can cause heap corruption and potentially execute arbitrary code by enticing a user to visit a specially crafted HTML page.