Authenticated Time-Based SQL Injection Vulnerability in TimeClock Software by TimeClock
CVE-2020-37005

7.1HIGH

Key Information:

Vendor

Timeclock Software

Status
Timeclock Software
Vendor
CVE Published:
29 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37005?

TimeClock Software 1.01 is susceptible to an authenticated time-based SQL injection vulnerability that enables attackers to enumerate valid usernames. By manipulating the 'notes' parameter in the add_entry.php endpoint, adversaries can inject conditional time delays. This allows them to ascertain the validity of usernames based on the variations in response times, thereby exploiting the application for unauthorized access.

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Affected Version(s)

TimeClock Software 1.01

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-2020-37005 - Proof of Concept

References

https://www.exploit-db.com/exploits/48874
exploit
https://web.archive.org/web/20190104104315/http://timeclo...
product
https://www.vulncheck.com/advisories/timeclock-software-a...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

François Bibeau
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