Cross-site scripting in Flarum - CVE-2022-41938

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Main Vulnerability Database Vulnerabilities #VU126531

Cross-site scripting in Flarum - CVE-2022-41938

Published: November 18, 2022 / Updated: April 20, 2026


Vulnerability identifier: #VU126531
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-41938
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Flarum
Software vendor:
Flarum

Description

The vulnerability allows a remote user to execute arbitrary script in a victim's browser.

The vulnerability exists due to cross-site scripting in the page title system when rendering discussion titles as HTML DOM nodes. A remote user can create or rename a discussion with malicious HTML markup to execute arbitrary script in a victim's browser.

User interaction is required to open the relevant discussion page.


Remediation

Install security update from vendor's website.

External links