CVE-2024-53255: Reflected Cross-site Scripting in /admin?page=media via file Parameter in BoidCMS

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-11-25 · updated 2026-06-17
Weakness: CWE-79

Description

BoidCMS is a free and open-source flat file CMS for building simple websites and blogs, developed using PHP and uses JSON as a database. In affected versions a reflected Cross-site Scripting (XSS) vulnerability exists in the /admin?page=media endpoint in the file parameter, allowing an attacker to inject arbitrary JavaScript code. This code could be used to steal the user's session cookie, perform phishing attacks, or deface the website. This issue has been addressed in version 2.1.2 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

BoidCMS: before 2.1.2 — fixed in 2.1.2

How to fix

Upgrade to a fixed version: BoidCMS 2.1.2. Check the vendor advisory for mitigations.

References

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