CISA confirms PHP2Shell vulnerabilities exploited in attacks
CISA added two critical PHP flaws tracked as PHP2Shell (CVE-2026-109618 and CVE-2026-109619) to its Known Exploited Vulnerabilities catalog. The bugs allow unauthenticated remote code execution, and federal agencies must patch by Thursday.
- CVE-2026-109618 and CVE-2026-109619 allow unauthenticated RCE on unpatched systems
- PHP patched both flaws on October 21 after details leaked
- Exploitation began four days before patches; Cloudflare and Amazon logged attempts
- PHP powers about 70% of websites, with over 5.1 million hosts exposed online
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