CERT-FR Warns of PHP RCE Flaws
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Multiple PHP vulnerabilities allow remote code execution; PHP 8.2–8.5 users should patch to the latest fixed versions.
CERT-FR issued an advisory covering multiple vulnerabilities in PHP that can allow an attacker to achieve remote code execution. The affected versions span the entire PHP legacy line (5.x through 8.1.x, all considered affected/unsupported) as well as current supported branches prior to specific patched releases: 8.2.x before 8.2.35, 8.3.x before 8.3.36, 8.4.x before 8.4.27, and 8.5.x before 8.5.12.
Two CVEs are referenced (CVE-2026-109618 and CVE-2026-109619), tied to PHP's own GitHub security advisories (GHSA-6wmf-4rv5-p3rp and GHSA-w8hw-w9fx-j79w) published alongside the official PHP security bulletins dated 21 October 2026. No exploitation in the wild is mentioned in the advisory; CERT-FR's recommendation is simply to apply the vendor-supplied patches referenced in the documentation.
Defenders running PHP should prioritize upgrading to the fixed versions noted above, especially for internet-facing or multi-tenant web applications where RCE in the PHP interpreter would have broad impact. Legacy PHP versions (5.x–8.1.x) are end-of-life and should be migrated away from regardless of this specific advisory, as they will not receive further security fixes.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1359
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