CVE-2026-109619

Description

PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).

Scoring

• CVSS: 8.1 (HIGH, 3.1)
• EPSS exploitation probability: Not yet available
• EPSS percentile: Not yet available

CISA KEV status

• Added to KEV: 2026-10-26
• Remediation due date: 2026-10-29
• Known ransomware campaign use: Unknown

Weakness types (CWE)

• CWE-416
• CWE-755
• CWE-824
• CWE-1325

References

• https://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rp
• http://www.openwall.com/lists/oss-security/2026/10/21/16
• http://www.openwall.com/lists/oss-security/2026/10/21/17
• http://www.openwall.com/lists/oss-security/2026/10/21/23
• http://www.openwall.com/lists/oss-security/2026/10/21/7
• http://www.openwall.com/lists/oss-security/2026/10/22/14
• http://www.openwall.com/lists/oss-security/2026/10/22/15
• http://www.openwall.com/lists/oss-security/2026/10/22/16
• http://www.openwall.com/lists/oss-security/2026/10/22/19
• http://www.openwall.com/lists/oss-security/2026/10/22/2

More from PHP Group

• CVE-2026-109618 — PHP
• CVE-2024-4577 — PHP