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CVE PROGRAM SOURCE RECORD9.5 Critical

CVE-2026-6722

Use-After-Free in SOAP using Apache map

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Status
Published
Published
Updated
Assigning organization
php

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, 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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

PHP Group PHP

Default version status: affected

  • 8.2.* to < 8.2.31affected
  • 8.3.* to < 8.3.31affected
  • 8.4.* to < 8.4.21affected
  • 8.5.* to < 8.5.6affected

References