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CVE-2026-109619

8.1 · HIGHActively Exploited

PHP has various global state that temporarily points into request memory.

Published Oct 21, 2026phpCWE-416EPSS 100.00%

Overview

CVE-2026-109619 is a high-severity vulnerability affecting php php. It was published on October 21, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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).

Remediation

Check the references section for vendor advisories and patches from php. Update php to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
phpphp>= 5.4.0, < 8.2.35Affected
paloaltonetworkspan-os>= 10.2.0, < 10.2.7Affected

References

GitHubgithub.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rpRefwww.openwall.com/lists/oss-security/2026/10/21/16Refwww.openwall.com/lists/oss-security/2026/10/21/17Refwww.openwall.com/lists/oss-security/2026/10/21/23Refwww.openwall.com/lists/oss-security/2026/10/21/7Refwww.openwall.com/lists/oss-security/2026/10/22/14Refwww.openwall.com/lists/oss-security/2026/10/22/15Refwww.openwall.com/lists/oss-security/2026/10/22/16Refwww.openwall.com/lists/oss-security/2026/10/22/19Refwww.openwall.com/lists/oss-security/2026/10/22/2

How CyberStrike helps

Frequently asked questions

What is CVE-2026-109619?

CVE-2026-109619 is a high-severity vulnerability affecting php php. It was published on October 21, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2026-109619?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-109619?

Check the references section for vendor advisories and patches from php. Update php to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-109619?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-109619 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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