What is CVE-2026-87820?

CVE-2026-87820 is a medium-severity vulnerability in Usmannasir Cyberpanel, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-09-09.

How severe is CVE-2026-87820?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Usmannasir Cyberpanel

CVE-2026-87820

CyberPanel versions 2.4.3 through 2.4.5 expose unauthenticated AI Scanner debugging endpoints that disclose administrator usernames, API-key prefixes, scan identifiers, target domains, and account metadata. Unauthenticated attackers can enumerate panel administrators and recent scanner activity to inventory multi-tenant installations and facilitate follow-on attacks.

Vulnerability class: Information Disclosure

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Usmannasir Cyberpanel

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-87820?: CVE-2026-87820 is a medium-severity vulnerability in Usmannasir Cyberpanel, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-09-09.
How severe is CVE-2026-87820?: Medium severity. CVSS v3 base score is 5.3 out of 10.