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CVE-2023-22489

3.5 · LOW

Flarum is a discussion platform for websites.

Published Jan 13, 2023CWE-862EPSS 0.56%

Overview

CVE-2023-22489 is a low-severity vulnerability. It was published on January 13, 2023 and has a CVSS 3.1 base score of 3.5 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Flarum is a discussion platform for websites. If the first post of a discussion is permanently deleted but the discussion stays visible, any actor who can view the discussion is able to create a new reply via the REST API, no matter the reply permission or lock status. This includes users that don't have a validated email. Guests cannot successfully create a reply because the API will fail with a 500 error when the user ID 0 is inserted into the database. This happens because when the first post of a discussion is permanently deleted, the `first_post_id` attribute of the discussion becomes `null` which causes access control to be skipped for all new replies. Flarum automatically makes discussions with zero comments invisible so an additional condition for this vulnerability is that the discussion must have at least one approved reply so that `discussions.comment_count` is still above zero after the post deletion. This can open the discussion to uncontrolled spam or just unintentional r

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

GitHubgithub.com/flarum/framework/commit/12f14112a0ecd1484d97330b82beb2a145919015GitHubgithub.com/flarum/framework/releases/tag/v1.6.3GitHubgithub.com/flarum/framework/security/advisories/GHSA-hph3-hv3c-7725GitHubgithub.com/flarum/framework/commit/12f14112a0ecd1484d97330b82beb2a145919015GitHubgithub.com/flarum/framework/releases/tag/v1.6.3GitHubgithub.com/flarum/framework/security/advisories/GHSA-hph3-hv3c-7725

How CyberStrike helps

Frequently asked questions

What is CVE-2023-22489?

CVE-2023-22489 is a low-severity vulnerability. It was published on January 13, 2023 and has a CVSS 3.1 base score of 3.5 (LOW).

How severe is CVE-2023-22489?

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-22489?

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

How can CyberStrike help with CVE-2023-22489?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-22489 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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