Php: SoapServer session-persisted object use-after-free via SOAP header fault (CVE-2026-7261)
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.
Php: SoapServer session-persisted object use-after-free via SOAP header fault (CVE-2026-7261)
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 software
pkg:bitnami/phpRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-php-2026-7261
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2026-7261"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Critical
Threat ID: 6aa3298791cc7f3848d1af24
Added to database: 09/10/2026, 22:04:55 UTC
Last updated: 09/10/2026, 22:04:55 UTC
Views: 1
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