CVE-2026-6722— Use-After-Free in SOAP using Apache map
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I. Basic Information for CVE-2026-6722
Vulnerability Information
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Vulnerability Title
Use-After-Free in SOAP using Apache map
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-6722
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Same Patch Batch · PHP Group · 2026-05-10 · 10 CVEs total
| CVE-2026-7258 | Out-of-bounds read in urldecode() on NetBSD | |
| CVE-2026-7262 | NULL pointer dereference in SOAP apache:Map decoder with missing <value> | |
| CVE-2026-7261 | SoapServer session-persisted object use-after-free via SOAP header fault | |
| CVE-2026-7259 | Null pointer dereference in php_mb_check_encoding() via mb_ereg_search_init() | |
| CVE-2026-7568 | Signed integer overflow in metaphone() | |
| CVE-2026-6735 | XSS within PHP-FPM status endpoint | |
| CVE-2025-14179 | SQL injection in pdo_firebird via NUL bytes in quoted strings | |
| CVE-2026-7263 | DoS attack via DOMNode::C14N() | |
| CVE-2026-6104 | Global buffer over-read in mb_convert_encoding() with attacker-supplied encoding |
IV. Related Vulnerabilities
Same product: PHP
- CVE-2026-7263
DoS attack via DOMNode::C14N() - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-7259
Null pointer dereference in php_mb_check_encoding() via mb_e - CVE-2026-7261
SoapServer session-persisted object use-after-free via SOAP
Same vendor: PHP Group
- CVE-2026-7263
DoS attack via DOMNode::C14N() - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-7259
Null pointer dereference in php_mb_check_encoding() via mb_e - CVE-2026-7261
SoapServer session-persisted object use-after-free via SOAP
V. Comments for CVE-2026-6722
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