Critical 9.8 CVSS 3.1 PHP Published on 2026-05-10

In PHP versions 8.2. before 8.2.31, 8.3.

CVECVE-2026-7261 GHSANo GHSA advisory

View at the source View JSON Last modified at the source: 2026-07-24

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.

Original text by NVD (NIST), public domain.

CVSS metrics 3.1

Source: security@php.net · secondary

Critical 9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vectorNetwork

ComplexityLow

Attack requirementsPresent

Privileges requiredNone

User interactionNone

Confidentiality (system)Low

Integrity (system)Low

Availability (system)Low

Confidentiality (others)Low

Integrity (others)Low

Availability (others)Low

References

Vendor Advisorygithub.com
https://github.com/php/php-src/security/advisories/GHSA-m33r-qmcv-p97q

Found a vulnerability?

Write to the PrestaShop core security team:

security-core@prestashop.com

Related advisories

PHP (29)

IDAdvisoryComponentSeverityAffected versionsPublishedFix

CVE-2026-109619 PHP has various global state that temporarily points into request memory. PHP Critical 9.2 ≥ 5.4.0 < 8.2.35
≥ 8.3.0 < 8.3.36
≥ 8.4.0 < 8.4.27
+1 2026-10-21 No

CVE-2026-109618 PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. PHP Critical 9.8 ≥ 7.3.0 < 8.2.35
≥ 8.3.0 < 8.3.36
≥ 8.4.0 < 8.4.27
+1 2026-10-21 No

CVE-2026-91765 cleanup_xml_node() in the SOAP XML parser recurses once per XML nesting level with no depth limit. PHP High 7.5 ≥ 8.2.0 < 8.2.34
≥ 8.3.0 < 8.3.35
≥ 8.4.0 < 8.4.26
+1 2026-09-25 No

CVE-2026-17544 Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP… PHP Critical 9.8 ≥ 8.4.0 < 8.4.24
≥ 8.5.0 < 8.5.9 2026-07-30 No

Does your server run PHP 8.2.x ≥ 8.2.0 < 8.2.31, 8.3.x ≥ 8.3.0 < 8.3.31, 8.4.x ≥ 8.4.0 < 8.4.21, 8.5.x ≥ 8.5.0 < 8.5.6?

PrestaShield checks it from the outside, without FTP access, and alerts you of every new advisory that affects you.

Check if my shop is affected