high CVSS 7.5

CVE-2026-7262·PHP vulnerability

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 a SOAP server has a typemap configured, the decoding process contains a mistake which checks the wrong variable in case of missing value element.  This leads to dereferences a NULL pointer, causing a segmentation fault. This allows a remote unauthenticated attacker to crash the PHP SOAP server process, resulting in denial of service.

Severity
high
Software
PHP
Fixed in
8.5.6
Published
2026-05-10

Affected versions

From: 8.5.0

Until: 8.5.6

Fixed in: 8.5.6

How to fix this CVE

Update PHP to version 8.5.6 or later to resolve a critical SOAP server vulnerability that causes denial of service through NULL pointer dereference. Organizations running PHP 8.5.0–8.5.5 with SOAP services enabled should prioritize this update immediately, as remote attackers can crash the application without authentication.

sudo dnf update php

Defensia detects this vulnerability

How to check if you are affected

  1. Run `php -v` to check your currently installed PHP version. Vulnerable versions are 8.5.0 through 8.5.5.
  2. Check if SOAP extension is enabled by running `php -m | grep soap` or reviewing your php.ini for `extension=soap` and `soap.wsdl_cache_enabled`.
  3. Search application logs for SOAP request processing errors: `grep -i 'segmentation\|segfault\|soap.*error' /var/log/php-fpm.log /var/log/apache2/error.log`
  4. Verify the patch by running `php -v` again after updating; confirm version is 8.5.6 or higher.

FAQ

What is CVE-2026-7262?

This vulnerability affects PHP's SOAP extension when a typemap is configured. The decoder checks an incorrect variable during element processing, leading to a NULL pointer dereference that crashes the SOAP server process, allowing remote denial of service attacks.

Is CVE-2026-7262 being actively exploited?

According to CISA KEV data, CVE-2026-7262 is not currently being actively exploited in the wild, and no public exploits are available. However, the technical simplicity of triggering a crash makes rapid exploitation likely if details become widely known.

What versions of PHP are affected by CVE-2026-7262?

PHP versions 8.2.0–8.2.30, 8.3.0–8.3.30, 8.4.0–8.4.20, and 8.5.0–8.5.5 are vulnerable. Fixed versions are PHP 8.2.31, 8.3.31, 8.4.21, and 8.5.6 respectively.

How do I check if my server is vulnerable to CVE-2026-7262?

Run `php -v` to identify your version. If it falls within the vulnerable ranges above and SOAP is enabled (`php -m | grep soap`), your server is at risk.

Does Defensia detect CVE-2026-7262?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If PHP is installed on a monitored server, CVE-2026-7262 will appear in your dashboard with remediation steps.

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References

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