SoapServer session-persisted object use-after-free via SOAP header fault
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Partial Red Hat: 3 fixed, 2 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| PHP Group | PHP | before 8.2.31; before 8.3.31; before 8.4.21; before 8.5.6 | 8.2.31, 8.3.31, 8.4.21, 8.5.6 | Patch available | CNA |
- PHP VendorPHP Group Affected before 8.2.31; before 8.3.31; before 8.4.21; before 8.5.6 Fixed in 8.2.31, 8.3.31, 8.4.21, 8.5.6 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | 8.2.0 to before 8.2.31; 8.3.0 to before 8.3.31; 8.4.0 to before 8.4.21; 8.5.0 to before 8.5.6 | Vulnerable | PHP |
- cpe:2.3:a:php:php:*:*:*:*:*:*:*:* Versions 8.2.0 to before 8.2.31; 8.3.0 to before 8.3.31; 8.4.0 to before 8.4.21; 8.5.0 to before 8.5.6 Vulnerable ·PHP
Remediation
- Fix · CNA PHP (PHP Group) Fixed in 8.2.31, 8.3.31, 8.4.21, 8.5.6
Red Hat 7 advisories
- RHSA-2026:34354 Released 2026-07-01 · Red Hat rating Importantphp:7.4 security update
- Red Hat Enterprise Linux AppStream (v. 8) apcu-panel-5.1.18-1.module+el8.10.0+22485+a3539972.noarch::php:7.4, libzip-1.6.1-1.module+el8.10.0+22485+a3539972.aarch64::php:7.4, libzip-1.6.1-1.module+el8.10.0+22485+a3539972.ppc64le::php:7.4 +47
- RHSA-2026:33449 Released 2026-06-30 · Red Hat rating Importantphp security update
- Red Hat Enterprise Linux AppStream (v. 9) php-8.0.30-6.el9_8, php-bcmath-8.0.30-6.el9_8, php-cli-8.0.30-6.el9_8 +22
- RHSA-2026:23388 Released 2026-06-04 · Red Hat rating Importantphp security update
- Red Hat Enterprise Linux AppStream (v. 10) php-8.3.31-1.el10_2, php-bcmath-8.3.31-1.el10_2, php-cli-8.3.31-1.el10_2 +22
Show 4 more Red Hat advisories
- RHSA-2026:22649 Released 2026-06-02 · Red Hat rating Importantphp8.4 security update
- Red Hat Enterprise Linux AppStream (v. 10) php8.4-8.4.21-1.el10_2, php8.4-bcmath-8.4.21-1.el10_2, php8.4-cli-8.4.21-1.el10_2 +22
- RHSA-2026:22305 Released 2026-06-01 · Red Hat rating Importantphp:8.2 security update
- Red Hat Enterprise Linux AppStream (v. 8) apcu-panel-5.1.23-1.module+el8.10.0+20770+a5eca186.noarch::php:8.2, libzip-1.7.3-1.module+el8.10.0+20770+a5eca186.aarch64::php:8.2, libzip-1.7.3-1.module+el8.10.0+20770+a5eca186.ppc64le::php:8.2 +47
- RHSA-2026:22142 Released 2026-06-01 · Red Hat rating Importantphp:8.3 security update
- Red Hat Enterprise Linux AppStream (v. 9) apcu-panel-5.1.23-1.module+el9.6.0+22647+1741ae35.noarch::php:8.3, php-8.3.31-2.module+el9.8.0+24329+a775fb4e.aarch64::php:8.3, php-8.3.31-2.module+el9.8.0+24329+a775fb4e.ppc64le::php:8.3 +47
- RHSA-2026:22143 Released 2026-06-01 · Red Hat rating Importantphp:8.2 security update
- Red Hat Enterprise Linux AppStream (v. 9) apcu-panel-5.1.23-1.module+el9.7.0+24111+199d2cc4.noarch::php:8.2, php-8.2.31-1.module+el9.8.0+24325+74f58d38.aarch64::php:8.2, php-8.2.31-1.module+el9.8.0+24325+74f58d38.ppc64le::php:8.2 +47
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
PHP 8.2.31, 8.3.31 and 2 more versions
8 records Highest priority Priority MEDIUM 1 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2026-05890 Use-After-Free in SOAP using Apache mapPriority MEDIUM 45
- TI-2025-12957 SQL injection in pdo_firebird via NUL bytes in quoted stringsPriority LOW 35
- TI-2026-05901 XSS within PHP-FPM status endpointPriority LOW 31
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:22649, RHSA-2026:23388 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:22305, RHSA-2026:34354 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:22142, RHSA-2026:22143, RHSA-2026:33449 |
Not affected: 1 product
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-7261
References
More PHP Group vulnerabilities
- TI-2024-04260 Argument Injection in PHP-CGI KEVCVSS 3.1CRITICAL 9.8
- TI-2026-78794 PHP remote code execution via stale global state KEVCVSS 4.0CRITICAL 9.2
- TI-2026-78793 Out-of-memory handling flaw in PHP allows remote code execution KEVCVSS 4.0CRITICAL 9.2
- TI-2024-01743 Command injection via array-ish $command parameter of proc_open() CVSS 3.1CRITICAL 9.4
- TI-2022-13555 PDO::quote() may return unquoted string CVSS 3.1CRITICAL 9.1
- TI-2024-10408 Reference counting in php_request_shutdown causes Use-After-Free CVSS 4.0CRITICAL 9.2
Sources
- CVE-2026-7261 · CVE Program
- CVE-2026-7261 · NVD
- FIRST EPSS
- CVE-2026-7261 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences