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.

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

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

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