---
title: "CVE-2026-109619: PHP - Remote Code Execution"
description: "PHP contains a use-after-free vulnerability caused by improper resetting of global state pointing to freed request memory, letting remote attackers execute arbitrary code, exploit requires crafted requests triggering stale state."
url: https://panop.io/threat-heartbeat/CVE-2026-109619/
---

# CVE-2026-109619 PHP - Remote Code Execution

PHP contains a use-after-free vulnerability caused by improper resetting of global state pointing to freed request memory, letting remote attackers execute arbitrary code, exploit requires crafted requests triggering stale state.

CVSS base score 9.8 /10

Critical

CISA KEV

Exploited in the wild

Public exploit

Proof of concept available

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-109619)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

21 October 2026

Updated

22 October 2026

Weakness

[CWE-416](https://cwe.mitre.org/data/definitions/416.html)

## Vendor fix

Update to the latest PHP version with the fix for global state use-after-free.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-109619](https://nvd.nist.gov/vuln/detail/CVE-2026-109619)
- [https://www.fastly.com/blog/fastlys-proactive-protection-critical-php-rce-cve-2026-109618](https://www.fastly.com/blog/fastlys-proactive-protection-critical-php-rce-cve-2026-109618)
- [https://www.wiz.io/blog/php2shell-php-rce](https://www.wiz.io/blog/php2shell-php-rce)
- [http://www.openwall.com/lists/oss-security/2026/10/21/17](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/2026/10/21/23)
- [https://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rp](https://github.com/php/php-src/security/advisories/GHSA-6wmf-4rv5-p3rp)
- [https://api.vulncheck.com/v3/index/vulncheck-canaries?cve=CVE-2026-109619&date=2026-10-22](https://api.vulncheck.com/v3/index/vulncheck-canaries?cve=CVE-2026-109619&date=2026-10-22)
- [https://aws.amazon.com/blogs/security/amazon-threat-intelligence-identifies-php2shell-exploitation-prior-to-public-disclosure-in-madpot/](https://aws.amazon.com/blogs/security/amazon-threat-intelligence-identifies-php2shell-exploitation-prior-to-public-disclosure-in-madpot/)
- [https://watchtowr.com/intelligence/php-remote-code-execution-php2shell/](https://watchtowr.com/intelligence/php-remote-code-execution-php2shell/)
- [http://www.openwall.com/lists/oss-security/2026/10/21/16](http://www.openwall.com/lists/oss-security/2026/10/21/16)
- [http://www.openwall.com/lists/oss-security/2026/10/21/7](http://www.openwall.com/lists/oss-security/2026/10/21/7)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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