CVEvulnerability

CVE-2026-6722

9.5 CRITICAL Published 2026-05-10 Modified 2026-07-24 Official page ↗
Status
Modified
Published
2026-05-10
Last modified
2026-07-24
Assigner
[email protected]
CVSS 4.0 ([email protected])
9.5 CRITICAL — CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:Red
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.7 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Weaknesses
CWE-416, CWE-825

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 configurations

• php php (>= 8.2.0 < 8.2.31) • php php (>= 8.3.0 < 8.3.31) • php php (>= 8.4.0 < 8.4.21) • php php (>= 8.5.0 < 8.5.6)

Related

Weakness · CWE (2)

  • CWE-416 Use After Free weakness
  • CWE-825 Expired Pointer Dereference weakness

References