Is CVE-2021-43851 actively exploited?

No active exploitation of CVE-2021-43851 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-43851 be exploited remotely?

Yes. CVE-2021-43851 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-43851?

CVE-2021-43851 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2021-43851

HIGH

CVE-2021-43851

CWE-89Published: December 22, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Anuko Time Tracker is an open source, web-based time tracking application written in PHP. SQL injection vulnerability exist in multiple files in Time Tracker version 1.19.33.5606 and prior due to not properly checking of the "group" and "status" parameters in POST requests. Group parameter is posted along when navigating between organizational subgroups (groups.php file). Status parameter is used in multiple files to change a status of an entity such as making a project, task, or user inactive. This issue has been patched in version 1.19.33.5607. An upgrade is highly recommended. If an upgrade is not practical, introduce ttValidStatus function as in the latest version and start using it user input check blocks wherever status field is used. For groups.php fix, introduce ttValidInteger function as in the latest version and use it in the access check block in the file.

NVD Source

Technical Analysis

CVE-2021-43851 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.