Vulnerabilities & Exploits

PHP2Shell draws millions of attempts, but no success observed

The PHP Foundation patched two critical PHP flaws that could enable unauthenticated remote code execution; Cloudflare reported millions of exploit attempts after public disclosure. No successful exploitation has been observed.

The flaws could let someone on the internet run code on a vulnerable PHP server without logging in. The reporting gives no further detail on how the attempts work, so the volume shows intense probing—not confirmed compromise. Several websites went offline as a precaution.

For teams running PHP services, the immediate tension is between exposure to heavy scanning and the availability cost of taking sites offline; the roundup offers no evidence that those outages followed successful attacks. Its other items—certificate trust, AI agents and software supply chains—are separate incidents, not one shared campaign or mechanism.

1 source · 1 day ago

CVEs in this update

77 CVEs

Across PHP, ruggedcom ape1808 firmware, pan-os, and related packages.

31 critical · 26 high · 4 medium · 1 low

7 in CISA KEV · 11 with EPSS above 1%

1 with functional or packaged public exploit code

Highest severity: CVE-2026-77521 · 10.0 CRITICAL

Highest EPSS: CVE-2026-109618 · 100%

Showing the top 10 by KEV, EPSS, and severity.

Timeline

Sources

Part of the PlainSec briefing for 2026-10-27

Every edition of this story: PHP2Shell draws millions of attempts, but no success observed

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