CVE-2026-112291
MEDIUM 6.9Flarum 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.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.3%chance of exploitation in 30 days · 28th percentile
Impact if exploited
6.9CVSS 4.0 · MEDIUM
- ConfidentialityLow
- IntegrityNone
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
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Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
- CWE-862: Missing Authorization
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
References and research data (JSON)
All CVSS metrics
- MEDIUM 6.9 v4.0 · CNA Primary
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - MEDIUM 5.3 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - MEDIUM 6.9 v4.0 · NVD Secondary
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - MEDIUM 5.3 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
Patches & mitigations
- https://github.com/flarum/framework/commit/257989e71fd8cc7ddab20f31dcde1aa760b1a08f CVE record · VulnCheck · Updated 2026-10-19T13:55:33.404Z
NVD · CVE-2026-112291 · Updated 2026-10-19T21:14:14.150 - https://github.com/flarum/framework/releases/tag/v2.0.0-beta.8 CVE record · VulnCheck · Updated 2026-10-19T13:55:33.404Z
NVD · CVE-2026-112291 · Updated 2026-10-19T21:14:14.150
Advisories
- https://www.vulncheck.com/advisories/flarum-extension-manager-2.0.0-beta.1-before-2.0.0-beta.8-missing-authorization-via-task-api CVE record · VulnCheck · Updated 2026-10-19T13:55:33.404Z
NVD · CVE-2026-112291 · Updated 2026-10-19T21:14:14.150 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-104282 EUVD · EUVD-2026-104282
Technical & other
- https://github.com/flarum/framework/issues/4386 CVE record · VulnCheck · Updated 2026-10-19T13:55:33.404Z
NVD · CVE-2026-112291 · Updated 2026-10-19T21:14:14.150 - https://github.com/flarum/framework/blob/v2.0.0-beta.6/extensions/package-manager/src/Api/Resource/TaskResource.php CVE record · VulnCheck · Updated 2026-10-19T13:55:33.404Z
NVD · CVE-2026-112291 · Updated 2026-10-19T21:14:14.150