kleo

kleo has 3 disclosed vulnerabilities in the WordSec catalog, reported between 2024 and 2025; all 3 are fixed as of September 2026. Their average CVSS score is 6.3, and the most serious one scores 7.5 out of 10. Severity breakdown: 0 critical and 1 high. 2025 was the busiest year with 2 disclosures.

The most common weakness is Cross-Site Scripting, behind 1 of the records (33%). Other recurring categories include Missing Authorization, PHP Remote File Inclusion.

Every one of the 3 issues recorded for kleo has a vendor fix available, so running the current release closes all known holes.

3 independent researchers contributed these findings, one record each.

01234567891019.12.2024Today19.12.20246.1Kleo < 5.4.4 - Reflected Cross-Site Scripting CVSS 6.1 · 19.12.202429.04.20255.3KLEO < 5.4.4 - Missing Authorization CVSS 5.3 · 29.04.202530.10.20257.5Kleo < 5.5.0 - Authenticated (Contributor+) Local File Inclusion CVSS 7.5 · 30.10.2025

Strategic Overview

Avg CVSSMedium
6.3/ 10
Patch Coverage100%
Open

0

Fixed

3

Get automatic notifications for all kleo vulnerabilities before they are exploited.

Highest severity on recordCVSS 7.5CVE-2025-64363

Kleo < 5.5.0 - Authenticated (Contributor+) Local File Inclusion

Read the full analysis

Vulnerability Records

3 records
Showing 1–3 of 3 reports

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C