PHP vulnerability advisories

Every CVE phpwarden knows about across the PHP engine, Composer packages and WordPress plugins, themes and core — ranked by real-world exploitation. Feed 2026.10.29.4, updated 2026-10-29. Browse by package.

19,303CVEs

8,638Composer advisories

12,328WordPress advisories

35Actively exploited (KEV) →

CVE	Package	Title	Severity	CVSS	EPSS
CVE-2020-5255	symfony/http-foundation, symfony/symfony	Prevent cache poisoning via a Response Content-Type header in Symfony	low	2.6	1%

Severity and CVSS come from the upstream advisory (OSV.dev, NVD, FriendsOfPHP); KEV marks CVEs on CISA's Known Exploited Vulnerabilities list; EPSS is FIRST's 30-day exploitation probability. Rows sort exploitation-first: KEV, then EPSS, then CVSS.