Is CVE-2021-31731 actively exploited?

No active exploitation of CVE-2021-31731 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-31731 be exploited remotely?

Yes. CVE-2021-31731 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-31731?

CVE-2021-31731 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2021-31731

CWE-22Published: August 12, 2021· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official Description

A directory traversal issue in KiteCMS 1.1.1 allows remote administrators to overwrite arbitrary files via ../ in the path parameter to index.php/admin/Template/fileedit, with PHP code in the html parameter.

NVD Source

Technical Analysis

CVE-2021-31731 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.5.