Cross-Site Scripting Vulnerabilities in PHP Timeclock by SourceForge
CVE-2021-47967

5.1MEDIUM

Key Information:

Vendor

Timeclock

Status
PHP Timeclock
Vendor
CVE Published:
15 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47967?

PHP Timeclock version 1.04 has multiple vulnerabilities that enable unauthenticated individuals to exploit cross-site scripting (XSS) weaknesses. Attackers can manipulate URL paths and POST parameters to inject arbitrary JavaScript into various endpoints, such as login.php, timeclock.php, audit.php, and timerpt.php. Furthermore, by exploiting 'from_date' and 'to_date' parameters within report requests, they can execute scripts in the browsers of unsuspecting users, compromising the security of the application and its users.

Affected Version(s)

PHP Timeclock 1.04

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47967 - Proof of Concept

References

https://www.exploit-db.com/exploits/49853
exploit
http://timeclock.sourceforge.net
product
https://sourceforge.net/projects/timeclock/files/PHP%20Ti...
product

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Tyler Butler
.