CVE-2020-37005

HIGH 7.1

TimeClock Software 1.01 Authenticated Time-Based SQL Injection

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

TimeClock Software 1.01 contains an authenticated time-based SQL injection vulnerability that allows attackers to enumerate valid usernames by manipulating the 'notes' parameter. Attackers can inject conditional time delays in the add_entry.php endpoint to determine user existence by measuring response time differences.

CWE	CWE-89
Vendor	timeclock software
Product	timeclock software
Published	Jan 29, 2026
Last Updated	Apr 7, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

TimeClock Software / TimeClock Software

1.01

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/48874 web.archive.org: https://web.archive.org/web/20190104104315/http://timeclock-software.net/ vulncheck.com: https://www.vulncheck.com/advisories/timeclock-software-authenticated-time-based-sql-injection

Credits

François Bibeau