CVE-2026-6722

A flaw was found in PHP's SOAP extension. This vulnerability allows a remote attacker to execute arbitrary code on the affected system. The issue stems from a use-after-free error in the object deduplication mechanism, which can be triggered by sending a specially crafted SOAP request. This allows an attacker to manipulate memory and achieve remote code execution.

Red Hat systems which are operating as documented will not be running a PHP application in the root user context and so they will restrict the code execution to the context of the current working user. The host system may be affected by resource allocation induced by an attacker, but the impact will not be total.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.