CMSimple 5.4 is vulnerable to Cross Site Scripting (XSS) via the file upload feature.
https://github.com/iiSiLvEr/CVEs/tree/main/CVE-2021-43742
https://github.com/iiSiLvEr/CMSimple5.4-Vulnerabilities
Source: Mitre, NVD
Published: 2022-04-13
Updated: 2026-06-17
Base Score: 3.5
Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N
Severity: Low
Base Score: 5.4
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Severity: Medium
EPSS: 0.00075