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PHP2Shell Exploit Attempts Hit Millions as Attackers Try to Deploy Mirai Malware

PHP2Shell Exploit Attempts Hit Millions as Attackers Try to Deploy Mirai Malware

Oct 23, 2026 Vulnerability / Threat Intelligence
Threat actors have been observed unsuccessfully attempting to exploit the newly disclosed PHP2Shell vulnerabilities to rope infected systems into a Mirai botnet variant called Potassium , as it emerges that weaponizing the flaws may be harder than previously thought. The attacks aim to exploit CVE-2026-109618 and CVE-2026-109619 (CVSS scores: 9.2), which can result in unauthenticated remote code execution (RCE) via specially crafted HTTP requests. The vulnerabilities have been patched in PHP versions 8.5.12, 8.4.27, 8.3.36, and 8.2.35. "However, analysis of the sample revealed that it is an updated and significantly expanded version of the Mirai-derived botnet variant identified in early 2026," Sophos said . "The sample displays downloader and network disruption functionality." ⚡ WARNING — PHP Warns of Another Unpatched RCE Flaw CVE-2026-115560 Specifically, it resolves a hard-coded, encrypted command-and-control (C2) address, establishes a TCP connec...
PHP Issues Emergency Patches for Two Critical PHP2Shell RCE Flaws as Exploit Attempts Emerge

PHP Issues Emergency Patches for Two Critical PHP2Shell RCE Flaws as Exploit Attempts Emerge

Oct 21, 2026 Vulnerability / Web Security
PHP has released emergency updates that fix two critical flaws in the language itself, letting an attacker without an account run code on a web server. The fixes are in PHP 8.5.12, 8.4.27, 8.3.36 and 8.2.35, and the PHP team says only updating fully protects a server. The flaws, together called PHP2Shell , sit in the PHP runtime, not in any application, so a site is exposed even when its own code is secure. The risk is highest on servers using Apache's mod_php, where a working exploit triggers the attack before any application code runs. Both flaws are rated 9.2 on the CVSS v4.0 scale and carry the identifiers  CVE-2026-109618  and  CVE-2026-109619 . PHP published them around the scheduled release time of 14:00 UTC on October 21, a day after details leaked ahead of a planned October 22 disclosure. ⚡ WARNING — PHP Warns of Another Unpatched RCE Flaw CVE-2026-115560 Researchers at Wiz, Calif, and OpenAI found and reported the flaws, which affect nearly every ...
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