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Critical PHP RCE CVEs (CVE-2026-109618/-109619) with public PoC

2026-10-21 15:56 UTC · HN (cve) · read the source ↗ #php#rce#critical-vulnerability
  • Engineer — Act: Public PoC already circulating before the patch ships — any PHP deployment is at immediate risk of remote code execution. Patch PHP to the fixed release as soon as it drops and monitor the php.net announce list; treat this as an emergency change window.
  • SOC/IR — Act: A public PoC against a critical PHP RCE means in-the-wild exploitation attempts are likely imminent or already underway; sweep web server and WAF logs for anomalous POST patterns targeting PHP session/upload endpoints and tune IDS rules to catch PHP shell drop attempts.
  • Leader — Plan: PHP underpins a large fraction of web infrastructure — confirm whether your org or key SaaS vendors run PHP-based apps, and ensure engineering has this on an emergency patch track this week before KEV listing and broader exploitation force a reactive posture.
  • Signals: CVE-2026-109618 — CISA KEV: not listed, EPSS n/a, public PoC on GitHub, reported by 4 collected sources
This entry was curated and judged by AI (Claude) with automated enrichment (CISA KEV / EPSS / public PoC). Verify against the original source before acting. Found a bad verdict? Report it — confirmed errors go to the corrections log.