What’s Vulnerable › Vulnerabilities

CVE-2026-112291: Flarum Extension Manager 2.0.0-beta.1 before 2.0.0-beta.8 Missing Authorization via Task API

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-19 · updated 2026-10-19
• Weakness: CWE-862

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

• Flarum Extension Manager: from 2.0.0-beta.1 before 2.0.0-beta.8 — fixed in 2.0.0-beta.8

How to fix

Upgrade to a fixed version: Flarum Extension Manager 2.0.0-beta.8. Check the vendor advisory for mitigations.

References

• https://github.com/flarum/framework/blob/v2.0.0-beta.6/extensions/package-manager/src/Api/Resource/TaskResource.php
• https://github.com/flarum/framework/commit/257989e71fd8cc7ddab20f31dcde1aa760b1a08f
• https://github.com/flarum/framework/issues/4386
• https://github.com/flarum/framework/releases/tag/v2.0.0-beta.8
• https://www.vulncheck.com/advisories/flarum-extension-manager-2.0.0-beta.1-before-2.0.0-beta.8-missing-authorization-via-task-api

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