CVE-2021-21352

Name: CVE-2021-21352
Creator: NVD / NIST
Published: 2021-03-03T01:15:13.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.39%

Last modified Jun 17, 2026

CVE-2021-21352 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Anuko Time Tracker is an open source, web-based time tracking application written in PHP. In TimeTracker before version 1.19.24.5415 tokens used in password reset feature in Time Tracker are based on system time and, therefore, are predictable. EPSS estimates a 1.39% chance of exploitation in the next 30 days.

Description

Anuko Time Tracker is an open source, web-based time tracking application written in PHP. In TimeTracker before version 1.19.24.5415 tokens used in password reset feature in Time Tracker are based on system time and, therefore, are predictable. This opens a window for brute force attacks to guess user tokens and, once successful, change user passwords, including that of a system administrator. This vulnerability is pathced in version 1.19.24.5415 (started to use more secure tokens) with an additional improvement in 1.19.24.5416 (limited an available window for brute force token guessing).

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

1.39%

68.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-330

Affected Software

Vendor	Product	Versions
Anuko	Time Tracker	< 1.19.24.5415

References

https://github.com/anuko/timetracker/commit/40f3d9345adc20e6f28eb9f59e2489aff87fecf5Patch, Third Party Advisory
https://github.com/anuko/timetracker/security/advisories/GHSA-43c9-rx4h-4gqqMitigation, Third Party Advisory
https://www.anuko.com/time-tracker/index.htmVendor Advisory
https://github.com/anuko/timetracker/commit/40f3d9345adc20e6f28eb9f59e2489aff87fecf5Patch, Third Party Advisory
https://github.com/anuko/timetracker/security/advisories/GHSA-43c9-rx4h-4gqqMitigation, Third Party Advisory
https://www.anuko.com/time-tracker/index.htmVendor Advisory

Timeline

Published: Mar 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21352?

How severe is CVE-2021-21352?

CVE-2021-21352 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21352?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21352?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST