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CVE-2026-6735— XSS within PHP-FPM status endpoint

AI Predicted 6.1 Difficulty: Easy EPSS 0.03% · P9

Affected Version Matrix 4

VendorProductVersion RangeStatus
PHP GroupPHP8.2.*< 8.2.31affected
8.3.*< 8.3.31affected
8.4.*< 8.4.21affected
8.5.*< 8.5.6affected
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I. Basic Information for CVE-2026-6735

Vulnerability Information
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Vulnerability Title
XSS within PHP-FPM status endpoint
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, 8.5.* before 8.5.6, due to improper sanitation of user data, it allows an attacker to compose an URL, which will cause the target to execute arbitrary JavaScript code (XSS) on the target's machine when the target is viewing the PHP-FPM status page.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
PHP 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHP是PHP开源的一种在服务器端执行的脚本语言。 PHP 8.2.31之前版本、8.3.31之前版本、8.4.21之前版本和8.5.6之前版本存在跨站脚本漏洞，该漏洞源于用户数据处理不当，允许攻击者构造URL，导致目标在查看PHP-FPM状态页面时执行任意JavaScript代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
PHP GroupPHP 8.2.* ~ 8.2.31 -

II. Public POCs for CVE-2026-6735

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III. Intelligence Information for CVE-2026-6735

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Advisory · 1

Same Patch Batch · PHP Group · 2026-05-10 · 10 CVEs total

CVE-2026-7258Out-of-bounds read in urldecode() on NetBSD
CVE-2026-7262NULL pointer dereference in SOAP apache:Map decoder with missing <value>
CVE-2026-7261SoapServer session-persisted object use-after-free via SOAP header fault
CVE-2026-7259Null pointer dereference in php_mb_check_encoding() via mb_ereg_search_init()
CVE-2026-7568Signed integer overflow in metaphone()
CVE-2026-6722Use-After-Free in SOAP using Apache map
CVE-2025-14179SQL injection in pdo_firebird via NUL bytes in quoted strings
CVE-2026-7263DoS attack via DOMNode::C14N()
CVE-2026-6104Global buffer over-read in mb_convert_encoding() with attacker-supplied encoding

IV. Related Vulnerabilities

Same product: PHP
Same vendor: PHP Group
Same weakness: CWE-79

V. Comments for CVE-2026-6735

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