Vulnerability Details CVE-2026-6722
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 59.1%
CVSS Severity
CVSS v3 Score 9.8
Products affected by CVE-2026-6722
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cpe:2.3:a:php:php:8.2.0
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cpe:2.3:a:php:php:8.2.1
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cpe:2.3:a:php:php:8.2.10
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cpe:2.3:a:php:php:8.2.11
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cpe:2.3:a:php:php:8.2.12
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cpe:2.3:a:php:php:8.2.13
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cpe:2.3:a:php:php:8.2.14
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cpe:2.3:a:php:php:8.2.15
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cpe:2.3:a:php:php:8.2.16
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cpe:2.3:a:php:php:8.2.17
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cpe:2.3:a:php:php:8.2.18
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cpe:2.3:a:php:php:8.2.19
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cpe:2.3:a:php:php:8.2.2
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cpe:2.3:a:php:php:8.2.20
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cpe:2.3:a:php:php:8.2.21
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cpe:2.3:a:php:php:8.2.22
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cpe:2.3:a:php:php:8.2.23
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cpe:2.3:a:php:php:8.2.24
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cpe:2.3:a:php:php:8.2.25
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cpe:2.3:a:php:php:8.2.26
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cpe:2.3:a:php:php:8.2.28
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cpe:2.3:a:php:php:8.2.29
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cpe:2.3:a:php:php:8.2.3
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cpe:2.3:a:php:php:8.2.30
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cpe:2.3:a:php:php:8.2.4
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cpe:2.3:a:php:php:8.2.5
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cpe:2.3:a:php:php:8.2.6
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cpe:2.3:a:php:php:8.2.7
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cpe:2.3:a:php:php:8.2.8
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cpe:2.3:a:php:php:8.2.9
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cpe:2.3:a:php:php:8.3.0
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cpe:2.3:a:php:php:8.3.1
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cpe:2.3:a:php:php:8.3.10
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cpe:2.3:a:php:php:8.3.11
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cpe:2.3:a:php:php:8.3.12
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cpe:2.3:a:php:php:8.3.13
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cpe:2.3:a:php:php:8.3.14
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cpe:2.3:a:php:php:8.3.15
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cpe:2.3:a:php:php:8.3.16
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cpe:2.3:a:php:php:8.3.17
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cpe:2.3:a:php:php:8.3.18
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cpe:2.3:a:php:php:8.3.19
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cpe:2.3:a:php:php:8.3.2
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cpe:2.3:a:php:php:8.3.20
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cpe:2.3:a:php:php:8.3.21
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cpe:2.3:a:php:php:8.3.22
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cpe:2.3:a:php:php:8.3.23
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cpe:2.3:a:php:php:8.3.24
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cpe:2.3:a:php:php:8.3.25
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cpe:2.3:a:php:php:8.3.26
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cpe:2.3:a:php:php:8.3.27
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cpe:2.3:a:php:php:8.3.28
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cpe:2.3:a:php:php:8.3.29
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cpe:2.3:a:php:php:8.3.3
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cpe:2.3:a:php:php:8.3.30
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cpe:2.3:a:php:php:8.3.4
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cpe:2.3:a:php:php:8.3.5
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cpe:2.3:a:php:php:8.3.6
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cpe:2.3:a:php:php:8.3.7
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cpe:2.3:a:php:php:8.3.8
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cpe:2.3:a:php:php:8.3.9
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cpe:2.3:a:php:php:8.4.0
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cpe:2.3:a:php:php:8.4.1
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cpe:2.3:a:php:php:8.4.10
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cpe:2.3:a:php:php:8.4.11
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cpe:2.3:a:php:php:8.4.12
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cpe:2.3:a:php:php:8.4.13
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cpe:2.3:a:php:php:8.4.14
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cpe:2.3:a:php:php:8.4.15
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cpe:2.3:a:php:php:8.4.16
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cpe:2.3:a:php:php:8.4.17
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cpe:2.3:a:php:php:8.4.18
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cpe:2.3:a:php:php:8.4.19
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cpe:2.3:a:php:php:8.4.2
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cpe:2.3:a:php:php:8.4.20
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cpe:2.3:a:php:php:8.4.3
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cpe:2.3:a:php:php:8.4.4
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cpe:2.3:a:php:php:8.4.5
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cpe:2.3:a:php:php:8.4.6
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cpe:2.3:a:php:php:8.4.7
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cpe:2.3:a:php:php:8.4.8
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cpe:2.3:a:php:php:8.4.9
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cpe:2.3:a:php:php:8.5.0
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cpe:2.3:a:php:php:8.5.1
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cpe:2.3:a:php:php:8.5.2
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cpe:2.3:a:php:php:8.5.3
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cpe:2.3:a:php:php:8.5.4
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cpe:2.3:a:php:php:8.5.5