What’s Vulnerable › Vulnerabilities
CVE-2026-7261: SoapServer session-persisted object use-after-free via SOAP header fault
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-10 · updated 2026-07-24
- Weakness: CWE-416
Description
In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when SoapServer is configured with SOAP_PERSISTENCE_SESSION, the handler object is persisted across requests via session storage. However, in the case SOAP requests results in an error, the persistance is handled incorrectly, resulting in freeing the object while keeping a pointer to it, which may lead to use-after-free. This may lead to memory corruption, information disclosure, or process crashes, with confidentiality, integrity, and availability impact on the vulnerable system.
Affected products
- PHP: from 8.2.0 before 8.2.31; from 8.3.0 before 8.3.31; from 8.4.0 before 8.4.21; from 8.5.0 before 8.5.6 — fixed in 8.2.31, 8.3.31, 8.4.21, 8.5.6
How to fix
Upgrade to a fixed version: PHP 8.2.31, 8.3.31, 8.4.21, 8.5.6. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-7261 or the next vulnerability affects your stack