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AI Just Found a Bug That Puts Up to 70% of the World’s Websites at Risk

Researchers said the flaws can enable remote code execution and memory disclosure, and website operators are being urged to update immediately.

  • On Wednesday, October 21, 2026, the PHP Foundation released emergency updates to patch two critical remote-code-execution vulnerabilities affecting the widely used programming language. Maintainers urged administrators to update systems immediately.
  • Researchers at security firm Calif and Wiz discovered the flaws using AI models in August, marking a shift in vulnerability detection. PHP underpins roughly 75% of identified websites, creating systemic risk across WordPress, Drupal, and Magento platforms.
  • Rated 9.2 in severity on the CVSS v4.0 scale, the 'PHP2Shell' vulnerabilities allow unauthenticated attackers to execute malicious code. Cloudflare Chief Technology Officer Dane Knecht reported the company was "seeing early attacks emerging" and updating firewall rules.
  • Following warnings from the European Union Computer Emergency Response Team and the National Security Agency , organizations were advised to isolate internet-facing applications. Government websites in the Netherlands and Finland proactively went offline Wednesday as a precautionary measure.
  • Describing the current patching process as "slow and manual," OpenAI President Greg Brockman warned that AI-driven vulnerability discovery will likely accelerate in the coming months. Security experts are now bracing for a "race to exploit" as attackers scan for unupdated servers.
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Sydney Morning HeraldSydney Morning Herald
+3 Reposted by 3 other sources
Lean Left

Australian cybersecurity website hit in global flaw

Australia’s own cybersecurity agency has been exposed to a critical programming language flaw in a global breach that could be exploited by hackers.

·North Sydney, Australia
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eSecurityPlanet broke the news on Tuesday, October 20, 2026.
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