CVE-2026-7261 SoapServer session-persisted object use-after-free via SOAP header fault
A use-after-free vulnerability in PHP SoapServer with session persistence allows attackers to cause memory corruption, crashes, or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-7261?
CVE-2026-7261 is a medium-severity use after free vulnerability in Php Php, published on 10 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-416
Which versions are affected by CVE-2026-7261?
3 open source packages ship an affected version, including libphp, php and php-min. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
libphp Bitnami | From 8.2.0 | 8.2.31, 8.3.31, 8.4.21, 8.5.6 |
php Bitnami | From 8.2.0 | 8.2.31, 8.3.31, 8.4.21, 8.5.6 |
php-min Bitnami | From 8.2.0 | 8.2.31, 8.3.31, 8.4.21, 8.5.6 |
Products include Php Php.
How do I fix CVE-2026-7261?
Upgrade libphp to a fixed version for your release line: 8.2.31, 8.3.31, 8.4.21 or 8.5.6.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-7261 being exploited?
There is no known exploitation of CVE-2026-7261 in the wild and no public exploit code.
Other vulnerabilities in Php Php
Sources
Also known as AZL-86343, BELL-CVE-2026-7261, BIT-libphp-2026-7261, BIT-php-2026-7261, BIT-php-min-2026-7261, DEBIAN-CVE-2026-7261 and 6 more.