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CVE-2026-75089— PHPGurukul Complaint Management System check_availability.php sql injection

Quick assessment

Affected
PHPGurukul Complaint Management System
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PHPGurukul Complaint Management System是PHPGurukul公司开源的一套投诉管理平台。 PHPGurukul Complaint Management System 1.0版本存在安全漏洞，该漏洞源于对文件user/check_availability.php中参数email的错误操作，可能导致SQL注入。

CVSS 7.3 · High EPSS 0.43% · P35

Affected Version Matrix 1

VendorProduct Version RangeStatus
PHPGurukul Complaint Management System 1.0 affected
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I. Basic Information for CVE-2026-75089

Vulnerability Information
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Vulnerability Title
PHPGurukul Complaint Management System check_availability.php sql injection
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in PHPGurukul Complaint Management System 1.0. Affected by this issue is some unknown functionality of the file user/check_availability.php. This manipulation of the argument email causes sql injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5
Vulnerability Title
PHPGurukul Complaint Management System 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHPGurukul Complaint Management System是PHPGurukul公司开源的一套投诉管理平台。 PHPGurukul Complaint Management System 1.0版本存在安全漏洞，该漏洞源于对文件user/check_availability.php中参数email的错误操作，可能导致SQL注入。
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
PHPGurukul Complaint Management System 1.0 cpe:2.3:a:phpgurukul:complaint_management_system:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-75089

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
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claude_code · 8962 chars
GitHub 复现环境（可 clone 直接跑）
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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POC zip download
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III. Intelligence Information for CVE-2026-75089

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Vendor Advisories for CVE-2026-75089 (1)

Security Blog Posts for CVE-2026-75089 (1)

Other References for CVE-2026-75089 (3)

IV. Related Vulnerabilities

Same product: Complaint Management System
Same vendor: PHPGurukul
Same weakness: CWE-89

V. Comments for CVE-2026-75089

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