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VulnerabilitiesJun 12, 2026

‼️ CVE-2026-40369: Twelve Bytes to Escape the Browser Sandbox. CVSS: 7.8 Writeup: https://t.co/L...

CVE-2026-40369: A vulnerability allowing browser sandbox escape with 12 bytes.

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Summary

A critical vulnerability, CVE-2026-40369, has been disclosed, allowing attackers to escape browser sandboxes with a minimal payload of just twelve bytes. The vulnerability carries a CVSS score of 7.8, indicating a high severity. Proof-of-concept code is available, highlighting the immediate risk.

Indicators of Compromise

  • cve — CVE-2026-40369