Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-7568— Signed integer overflow in metaphone()

Quick assessment

Affected
PHP Group PHP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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之前版本存在缓冲区错误漏洞，该漏洞源于metaphone()函数使用有符号整数变量跟踪输入字符串中的当前位置，当传递超过2147483647字节的字符串时发生有符号整数溢出，导致未定义行为，可能引发越界读取造成段错误或访问无关内存，影响PHP进程的可用性。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.46% · P38

Affected Version Matrix 4

VendorProduct Version RangeStatus
PHP Group PHP 8.2.*< 8.2.31 affected
8.3.*< 8.3.31 affected
8.4.*< 8.4.21 affected
8.5.*< 8.5.6 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-7568

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Signed integer overflow in metaphone()
Source: CVE Program / CVE List V5
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 metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/RE:L/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
PHP 缓冲区错误漏洞
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之前版本存在缓冲区错误漏洞，该漏洞源于metaphone()函数使用有符号整数变量跟踪输入字符串中的当前位置，当传递超过2147483647字节的字符串时发生有符号整数溢出，导致未定义行为，可能引发越界读取造成段错误或访问无关内存，影响PHP进程的可用性。
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

Vendor Product Affected Versions CPE Subscribe
PHP Group PHP 8.2.* ~ 8.2.31 -

II. Public POCs for CVE-2026-7568

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-7568

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-7568 (1)

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

CVE-2026-6722 9.5 CRITICAL Use-After-Free in SOAP using Apache map
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-2026-6735 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
Same vendor: PHP Group
Same weakness: CWE-190

V. Comments for CVE-2026-7568

No comments yet

Leave a comment