CVE-2026-6722 Affecting php-pecl-xdebug-debugsource package, versions <0:2.9.5-1.module+el8.10.0+1912+72767185


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.74% (51st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ROCKY8-PHPPECLXDEBUGDEBUGSOURCE-17806744
  • published3 Jul 2026
  • disclosed10 May 2026

Introduced: 10 May 2026

CVE-2026-6722  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 php-pecl-xdebug-debugsource to version 0:2.9.5-1.module+el8.10.0+1912+72767185 or higher.
This issue was patched in RLSA-2026:34354.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-pecl-xdebug-debugsource package and not the php-pecl-xdebug-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

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, the SOAP extension's object deduplication mechanism stores pointers to PHP objects in a global map without incrementing their reference counts. When an apache:Map node contains duplicate keys, processing the second entry overwrites the first in the temporary result map, freeing the original PHP object while its stale pointer remains in the map. A subsequent href reference to the freed node can copy the dangling pointer into the result. As PHP string allocations can reclaim the freed memory region, an attacker with control over the SOAP request body can exploit this use-after-free to achieve remote code execution.

CVSS Base Scores

version 3.1