CVE-2021-47966 - CVE House
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Status published High CVE-2021-47966

PHP Timeclock 1.04 SQL Injection via login.php

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Tyler Butler

Affected Vendor

Affected Software

PHP Timeclock
Vulnerable Versions:
1.04

Timeline

Official Publish: May 15th, 2026
Last Modified: May 15th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Weaknesses (CWE)