Vulnerability · Published Oct 19, 2026 · Assigned by VulnCheck
CVE-2026-112291Flarum Extension Manager 2.0.0-beta.1 before 2.0.0-beta.8 Missing Authorization via Task API
Medium 5.3
In plain English
A medium-severity missing authorization in Extension Manager from Flarum. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 71.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Flarum Extension Manager 2.0.0-beta.1 before 2.0.0-beta.8 lacks authentication and admin checks on the TaskResource index endpoint, allowing unauthenticated information disclosure. Remote attackers can send GET requests to /api/extension-manager-tasks to read task output revealing filesystem paths, installed extensions, versions, and PHP version.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Flarum | Extension Manager | 2.0.0-beta.1 – before 2.0.0-beta.8 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/flarum/framework/issues/4386 issue-tracking
- https://github.com/flarum/framework/commit/257989e71fd8cc7ddab20f31dcde1aa760b1a08f patch
- Flarum v2.0.0-beta.8 Release Notes release-notes
- https://github.com/flarum/framework/blob/v2.0.0-beta.6/extensions/package-manager/src/Api/Resource/TaskResource.php technical-description
- VulnCheck Advisory: Flarum Extension Manager 2.0.0-beta.1 before 2.0.0-beta.8 Missing Authorization via Task API third-party-advisory