Critical Vulnerabilities in PHP: CERT-EU - Critical Vulnerabilities in PHP
cert.europa.eu/publications/security-advisories/2026-018/
Critical Vulnerabilities in PHP
Key FactsPHP flaws leave European government websites offline
16 hours ago · Reading time: ~45 sec.
Summary created with AI assistance · Source: ctvnews.ca
  • PHP runs nearly 70 per cent of websites with an identifiable programming language and underpins WordPress, which powers about 40 per cent of all websites.

  • The two flaws were rated 9.2 out of 10; CERT-EU says they enable unauthenticated remote code execution.

  • Wordfence warned that standard automatic WordPress updates would not install this PHP patch.

  • Calif reported the first flaw, found with OpenAI’s GPT-5.6 Sol model, on August 11; Wiz independently reported a second using AI models on August 24.
  • rank among the most severe vulnerabilities discovered in PHP, and arguably in software history.
    — Wiz (security firm) stated that the findings rank among the most severe vulnerabilities discovered in PHP, and arguably in software history.
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