PHP SOAP Use-After-Free RCE Vulnerability - 20260511001¶
Overview¶
A critical vulnerability has been identified in the PHP SOAP extension, involving a use-after-free condition that may allow an attacker to achieve remote code execution.
What is vulnerable?¶
| Product(s) Affected | Version(s) | CVE | CVSS | Severity |
|---|---|---|---|---|
| PHP (ext-soap) | < 8.2.31 < 8.3.31 < 8.4.21 < 8.5.6 |
CVE-2026-6722 | 9.5 | Critical |
What has been observed?¶
The WASOC has not received any reports of exploitation of this vulnerability on Western Australian Government networks at the time of writing.
Recommendation¶
The WASOC recommends administrators apply the solutions as per vendor instructions to all affected devices within expected timeframes (refer Patch Management):