Out-of-bounds Read Affecting v8/v8 package, versions [,13.5.107-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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-V8V8-14038284
- published16 Nov 2025
- disclosed14 Nov 2025
- creditZhenghang Xiao, Nan Wang
Introduced: 14 Nov 2025
NewCVE-2025-9479 (opens in a new tab)How to fix?
Upgrade v8/v8 to version 13.5.107-pgo or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read due to improper handling of TrustedHeapConstant objects in the escape analysis optimization within the V8 Turbofan compiler. An attacker can cause heap corruption by crafting an HTML page that triggers improper handling of TrustedHeapConstant objects, leading to confusion in the decompression optimization.