CVE-2021-47966

HIGH EPSS 18.6%

Published May 15, 20261mo ago · Modified Jun 17, 20261w ago

8.8 CVSS 4.0

High

Published May 15, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

8.8

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

18.6% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-89 SQL Injection Injection

References 4

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.