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2 IOCs

CVE-2026-109618 and CVE-2026-109619: PHP Vulnerable to Unauthenticated RCE Attacks

Zscaler ThreatLabz
Zscaler ThreatLabz
Published October 21, 2026Original Report

Excerpt

*October 23, 2026: This advisory has been updated with new ThreatLabz analysis and Zscaler Deception telemetry on exploitation activity observed during the first 48 hours following disclosure.IntroductionOn October 21, 2026, two critical remote code execution (RCE) vulnerabilities, CVE-2026-109618 and CVE-2026-109619, collectively referred to as “PHP2Shell,” were publicly disclosed. Both vulnerabilities carry a CVSS v4.0 score of 9.2 out of 10. The PHP security team…

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Indicators of Compromise

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2 indicators

TypeIndicatorConfidenceScoreFirst Seen
CVECVE-2026-109618HighScore 83/100First seen
CVECVE-2026-109619HighScore 83/100First seen

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