# CVE-2026-87820: CyberPanel AI Scanner unauthenticated information disclosure

Source: https://junglewise.ai/threats/cve-2026-87820-cyberpanel-ai-scanner-unauthenticated-information-disclosure  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-09. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-87820 · Severity: medium · CVSS 5.3 · Published 2026-09-09

CyberPanel is a web hosting control panel used to manage multi-tenant server environments and hosted domains. Versions 2.4.3 through 2.4.5 expose debugging API endpoints without authentication, allowing attackers to enumerate administrator usernames, API-key prefixes, and scan activity metadata. An attacker can inventory all administrators and targets across the hosted panel to facilitate account takeover or lateral movement attacks.

## Quick answers

**Is CVE-2026-87820 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-87820 being exploited in the wild.

**How severe is CVE-2026-87820?** Medium severity, with a CVSS score of 5.3, published 9 September 2026.

**Which products and versions are affected?** CyberPanel CyberPanel 2.4.3 through 2.4.5.

**Is there a fix for CVE-2026-87820?** A patch was published on 2026-05-04: Fix committed (commit 20484fd); available in CyberPanel 2.4.6, 3.0.1 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-87820 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-87820?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an information disclosure (CWE-200) caused by active debug code (CWE-489) in production. Two unauthenticated endpoints—GET /api/ai-scanner/list-api-keys and POST /api/ai-scanner/test-auth—expose administrator usernames, API-key prefixes, account state, scan identifiers, target domains, and scan ownership metadata without requiring authentication or user interaction. The vulnerable endpoints are network-reachable and require no privileges. An attacker can enumerate multi-tenant installations and associate administrators with hosted domains to support reconnaissance for follow-on attacks. The fix (commit 20484fd) removes the debugging routes and their handlers; patched versions are CyberPanel 2.4.6, 3.0.1, and later stable releases.

## Affected products

- CyberPanel CyberPanel 2.4.3 through 2.4.5

## Timeline

- 2026-08-11: disclosed: GitHub Security Advisory GHSA-qmwq-9cc8-x6h2 published
- 2026-05-04: patched: Fix committed (commit 20484fd); available in CyberPanel 2.4.6, 3.0.1 and later
- 2026-09-09: advisory: CVE-2026-87820 published on NVD

## References

- [https://github.com/usmannasir/cyberpanel/commit/20484fd1786a424054386e5d6290d66b47cab3a3](https://github.com/usmannasir/cyberpanel/commit/20484fd1786a424054386e5d6290d66b47cab3a3)
- [https://github.com/usmannasir/cyberpanel/security/advisories/GHSA-qmwq-9cc8-x6h2](https://github.com/usmannasir/cyberpanel/security/advisories/GHSA-qmwq-9cc8-x6h2)