CVE details

CVE-2026-8959

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component

• Severity: Medium
• CVSS: N/A
• Published: 2026-05-19
• Fixed in: 151

Description

Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component

Affected products

• Firefox · → 151
• Firefox · → 140.11.0
• Firefox · → 151.0.0

Overlaps: Firefox

Source

View on NVD

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