CVE-2024-21641

6.5 · MEDIUM

Published Jan 5, 2024 flarum CWE-601 EPSS 1.07% (62th pctl) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Overview

CVE-2024-21641 is a medium-severity vulnerability affecting flarum flarum. It was published on January 5, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

Flarum is open source discussion platform software. Prior to version 1.8.5, the Flarum `/logout` route includes a redirect parameter that allows any third party to redirect users from a (trusted) domain of the Flarum installation to redirect to any link. For logged-in users, the logout must be confirmed. Guests are immediately redirected. This could be used by spammers to redirect to a web address using a trusted domain of a running Flarum installation. The vulnerability has been fixed and published as flarum/core v1.8.5. As a workaround, some extensions modifying the logout route can remedy this issue if their implementation is safe.

Remediation

Check the references section for vendor advisories and patches from flarum. Update flarum to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
flarum	flarum	>= 0, < 1.8.5	Affected

References

GitHub github.com/flarum/flarum-core/commit/ee8b3b4ad1413a2b0971fdd9e40f812d2a3a9d3a GitHub github.com/flarum/framework/commit/7d70328471cf3091d92d95c382d277aec7996176 GitHub github.com/flarum/framework/security/advisories/GHSA-733r-8xcp-w9mr GitHub github.com/flarum/flarum-core/commit/ee8b3b4ad1413a2b0971fdd9e40f812d2a3a9d3a GitHub github.com/flarum/framework/commit/7d70328471cf3091d92d95c382d277aec7996176 GitHub github.com/flarum/framework/security/advisories/GHSA-733r-8xcp-w9mr

Frequently Asked Questions

What is CVE-2024-21641?

CVE-2024-21641 is a medium-severity vulnerability affecting flarum flarum. It was published on January 5, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-21641?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-21641?

How can CyberStrike help with CVE-2024-21641?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-21641 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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HackBrowser

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