PHP Security Alert: Critical Remote Code Execution Flaw Puts Servers at Immediate Risk
China's National Vulnerability Database (CNVD) has issued a critical security advisory, officially listing two PHP remote code execution vulnerabilities designated as CNVD-2026-41674 and CNVD-2026-41675. Corresponding to the international identifiers CVE-2026-109618 and CVE-2026-109619, these flaws have received a comprehensive "Critical" severity rating.
Impact Scope: Beyond Simple Server Crashes
The core danger lies in the attack vector: remote exploitation requires no authentication. By crafting specific malicious HTTP requests, an attacker can trigger memory corruption on the target server.
- Denial-of-Service: The most immediate effect could be service disruption, rendering websites or applications inaccessible.
- Sensitive Data Theft: Under certain conditions, attackers could bypass security measures to exfiltrate critical data like database contents and user credentials.
- Remote Code Execution: This represents the peak severity, granting attackers the ability to execute arbitrary code and potentially gain full control of the compromised server.
Current Threat Landscape: Details Public, Patching Urgent
According to the CNVD bulletin, technical analysis and proof-of-concept code for this vulnerability are now circulating widely within cybersecurity communities. This significantly lowers the barrier to exploitation, enabling a broader range of threat actors to launch attacks.
CNVD strongly urges all potentially affected users to immediately audit their PHP environments and apply updates to the latest patched versions provided by official sources. Delaying remediation leaves servers exposed to an actively escalating threat.