CVE-2026-112291 Details
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.
A vulnerability exists in the Flarum Extension Manager Task Resource API, specifically in versions 2.0.0-beta.1 prior to 2.0.0-beta.8. The TaskResource index endpoint lacks proper authentication and admin authorization checks, allowing unauthenticated users to access sensitive information. Remote attackers can send GET requests to the '/api/extension-manager-tasks' endpoint and retrieve task output that includes filesystem paths, details about installed extensions and their versions, the PHP version, and composer error messages.
Users can upgrade to Flarum Extension Manager version 2.0.0-beta.8 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 19, 2026CISA-ADP
Assessed Oct 19, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/flarum/framework/blob/v2.0.0-beta.6/extensions/package-manager/src/Api/Resource/TaskResource.php | [email protected] | Source CodeVendor |
| https://github.com/flarum/framework/commit/257989e71fd8cc7ddab20f31dcde1aa760b1a08f | [email protected] | Source CodeVendor |
| https://github.com/flarum/framework/issues/4386 | [email protected] | Issue TrackingTechnical DescriptionVendor |
| https://github.com/flarum/framework/releases/tag/v2.0.0-beta.8 | [email protected] | Release NotesVendor |
| https://www.vulncheck.com/advisories/flarum-extension-manager-2.0.0-beta.1-before-2.0.0-beta.8-missing-authorization-via-task-api | [email protected] | AdvisoryBundle |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Flarum Extension Manager | >= 2.0.0-beta.1, < 2.0.0-beta.8 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 19, 2026 | CVE Modified | CISA-ADP |
| Oct 19, 2026 | New CVE Received | [email protected] |