Flarum Framework vulnerabilities

CVE-2024-21641 [MEDIUM] CWE-601 CVE-2024-21641: Flarum is open source discussion platform software. Prior to version 1.8.5, the Flarum `/logout` rou 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

CVE-2023-40033 [HIGH] CWE-918 CVE-2023-40033: Flarum is an open source forum software. Flarum is affected by a vulnerability that allows an attack Flarum is an open source forum software. Flarum is affected by a vulnerability that allows an attacker to conduct a Blind Server-Side Request Forgery (SSRF) attack or disclose any file on the server, even with a basic user account on any Flarum forum. By uploading a file containing a URL and spoofing the MIME type, an attacker can manipulate the appli

CVE-2025-27794 [MEDIUM] CWE-74 CVE-2025-27794: Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to Flarum is open-source forum software. A session hijacking vulnerability exists in versions prior to 1.8.10 when an attacker-controlled authoritative subdomain under a parent domain (e.g., `subdomain.host.com`) sets cookies scoped to the parent domain (`.host.com`). This allows session token replacement for applications hosted on sibling subdomains (e.

CVE-2023-22488 [MEDIUM] CWE-862 CVE-2023-22488: Flarum is a forum software for building communities. Using the notifications feature, one can read r Flarum is a forum software for building communities. Using the notifications feature, one can read restricted/private content and bypass access checks that would be in place for such content. The notification-sending component does not check that the subject of the notification can be seen by the receiver, and proceeds to send notifications through

CVE-2023-27577 [MEDIUM] CWE-22 CVE-2023-27577: flarum is a forum software package for building communities. In versions prior to 1.7.0 an admin acc flarum is a forum software package for building communities. In versions prior to 1.7.0 an admin account which has already been compromised by an attacker may use a vulnerability in the `LESS` parser which can be exploited to read sensitive files on the server through the use of path traversal techniques. An attacker can achieve this by providing an

CVE-2022-41938 [MEDIUM] CWE-79 CVE-2022-41938: Flarum is an open source discussion platform. Flarum's page title system allowed for page titles to Flarum is an open source discussion platform. Flarum's page title system allowed for page titles to be converted into HTML DOM nodes when pages were rendered. The change was made after `v1.5` and was not noticed. This allowed an attacker to inject malicious HTML markup using a discussion title input, either by creating a new discussion or renaming one

CVE-2023-22487 [MEDIUM] CWE-284 CVE-2023-22487: Flarum is a forum software for building communities. Using the mentions feature provided by the flar Flarum is a forum software for building communities. Using the mentions feature provided by the flarum/mentions extension, users can mention any post ID on the forum with the special `@""#p` syntax. The following behavior never changes no matter if the actor should be able to read the mentioned post or not: A URL to the mentioned post is inserted in

CVE-2018-19133 [MEDIUM] CWE-200 Flarum Core Leaks PII Flarum Core Leaks PII In Flarum Core 0.1.0-beta.7.1, a serious leak can get everyone's email address.

CVE-2023-22489 [LOW] CWE-862 CVE-2023-22489: Flarum is a discussion platform for websites. If the first post of a discussion is permanently delet 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 cr