What’s Vulnerable › Vulnerabilities

CVE-2021-47966: PHP Timeclock 1.04 SQL Injection via login.php

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-15 · updated 2026-06-17
• Weakness: CWE-89

Description

PHP Timeclock 1.04 contains time-based and boolean-based blind SQL injection vulnerabilities in the login_userid parameter of login.php that allows unauthenticated attackers to extract database contents. Attackers can submit crafted POST requests with SQL payloads using SLEEP functions or RLIKE conditional statements to dump sensitive database information including employee names and credentials.

Affected products

• Timeclock PHP Timeclock: 1.04

References

• http://timeclock.sourceforge.net
• https://sourceforge.net/projects/timeclock/files/PHP%20Timeclock/PHP%20Timeclock%201.04/
• https://www.exploit-db.com/exploits/49849
• https://www.vulncheck.com/advisories/php-timeclock-sql-injection-via-login-php

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