CVE details

CVE-2026-4689

Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component

• Severity: High
• CVSS: N/A
• Published: 2026-03-24
• Fixed in: 149

Description

Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component

Affected products

• Firefox · → 149
• Firefox · → 115.34.0
• Firefox · → 149.0
• Firefox · 128.0 → 140.9.0

Overlaps: Firefox

Source

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