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Vulnerability record · CVE-2021-21352 · published 3 March 2021

CVE-2021-21352: Anuko time tracker vulnerability

Anuko · Time Tracker

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).

9.1 CVSS 3.1 Critical EPSS 1.5% · top 26.0% CWE-330 · CWE-330
9.1CVSS 3.1 base score, v2 5.0
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

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).

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/anuko/timetracker/commit/40f3d9345adc20e6f28eb9f59e2489aff87fecf5 PatchThird Party Advisory
https://github.com/anuko/timetracker/security/advisories/GHSA-43c9-rx4h-4gqq MitigationThird Party Advisory
https://www.anuko.com/time-tracker/index.htm Vendor Advisory
https://github.com/anuko/timetracker/commit/40f3d9345adc20e6f28eb9f59e2489aff87fecf5 PatchThird Party Advisory
https://github.com/anuko/timetracker/security/advisories/GHSA-43c9-rx4h-4gqq MitigationThird Party Advisory
https://www.anuko.com/time-tracker/index.htm Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-32308Anuko time tracker sql injection vulnerabilityanuko timetracker is an open source time tracking system. Boolean-based blind SQL injection vulnerability existed in Time Tracker invoices.php in ver…EPSS 0.66%9.8CVE-2023-32306Anuko time tracker sql injection vulnerabilityTime Tracker is an open source time tracking system. A time-based blind injection vulnerability existed in Time Tracker reports in versions prior to …EPSS 0.72%9.8CVE-2020-27422Anuko time tracker insufficient session expiration vulnerabilityIn Anuko Time Tracker v1.19.23.5311, the password reset link emailed to the user doesn't expire once used, allowing an attacker to use the same link …EPSS 7.9%8.8CVE-2022-24707Anuko time tracker sql injection vulnerabilityAnuko Time Tracker is an open source, web-based time tracking application written in PHP. UNION SQL injection and time-based blind injection vulnerab…EPSS 7.2%8.8CVE-2021-43851Anuko time tracker sql injection vulnerabilityAnuko Time Tracker is an open source, web-based time tracking application written in PHP. SQL injection vulnerability exist in multiple files in Time…EPSS 1.2%8.1CVE-2021-29436Anuko time tracker cross-site request forgery vulnerabilityAnuko Time Tracker is an open source, web-based time tracking application written in PHP. In Time Tracker before version 1.19.27.5431 a Cross site re…EPSS 0.53%7.5CVE-2020-27423Anuko time tracker improper restriction of authentication attempts vulnerabilityAnuko Time Tracker v1.19.23.5311 lacks rate limit on the password reset module which allows attacker to perform Denial of Service attack on any legit…EPSS 6.4%7.3CVE-2020-15255Anuko time tracker injection vulnerabilityIn Anuko Time Tracker before verion 1.19.23.5325, due to not properly filtered user input a CSV export of a report could contain cells that are treat…EPSS 3.5%

Source: NIST National Vulnerability Database (record CVE-2021-21352), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.