Cyber threat research writeups published today warn of unprecedented automated scanning volumes hitting global web application firewalls. Security analysts dubbed the ongoing campaign Black October as automated botnets attempt mass exploitation of memory allocation defects in core web runtimes.
The ongoing attack wave targets PHP core vulnerabilities CVE-2026-109618 and CVE-2026-109619. Unauthenticated remote adversaries transmit malformed multipart HTTP request headers designed to trigger uninitialized array hash table allocation bugs, executing remote system commands under the web server context before application logic processes incoming traffic. Security telemetry indicates threat groups utilizing automated script arrays to scan millions of IP addresses per hour, attempting to plant persistent web shells and cryptominers.
Subverting core web application engines exposes hosting infrastructure and backend database servers. Because PHP processes web traffic for enterprise web portals, digital storefronts, and cloud APIs, an unauthenticated core remote code execution flaw allows threat actors to establish covert footholds and exfiltrate database credentials.
– Upgrade production PHP web application runtimes immediately to fixed maintenance releases 8.5.12, 8.4.27, 8.3.36, or 8.2.35.
– Configure web application firewall WAF rules to inspect and strip malformed multipart POST requests on non-upload endpoints.
– Inspect web server hosting directories for unauthorized shell scripts or newly modified executable files.
– Monitor host process execution trees for anomalous command prompt or shell invocations originating from web worker daemons.
Web application runtime defense requires rapid dependency patch execution and strict edge request filtering to ensure central web hosting infrastructure remains protected against automated botnet exploitation. #CodeDefence #PHP #PHP2Shell #RCE #AppSec #WebSecurity #ZeroDay #PatchManagement #ThreatIntelligence #DevSecOps
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