Critical PHP Vulnerability (CVE-2026-109618, CVE-2026-109619) [infocon yellow], (Wed, Oct 21st)

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SANS Internet Storm Center, InfoCON: green

October 21st, 2026 at 9:02 PM

Critical PHP Vulnerability (CVE-2026-109618, CVE-2026-109619) [infocon yellow], (Wed, Oct 21st)

PHP.net announced that it will release a critical update today. We decided to change the infoCon to YELLOW due to the widespread use of PHP, the expected severity of the flaw (CVSS 9.4), and the availability of early PoC exploits before the patch became available.

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Score: 2.12

Engagement proxy: 0

Canonical link: https://isc.sans.edu/diary/rss/33440