CVE-2026-7568— Signed integer overflow in metaphone()
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I. Basic Information for CVE-2026-7568
Vulnerability Information
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Vulnerability Title
Signed integer overflow in metaphone()
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 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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-7568
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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-2026-6722 | Use-After-Free in SOAP using Apache map | |
| 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
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Grid: Integer Overflow in Grid::expand_rows Leads to Safe-AP - CVE-2026-42217
OpenEXR: Shift exponent overflow in `readVariableLengthInteg
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