Auth bypass in Usmannasir Cyberpanel
CVE-2026-65917
CyberPanel through 1.9.1, fixed in commit b198460, contains an insecure direct object reference (IDOR) vulnerability in the IncBackups application's incremental-backup handlers (deleteBackup, fetchRestorePoints, and restorePoint) that allows authenticated panel users to access or manipulate other tenants' backup resources by supplying an attacker-controlled globally sequential IncJob integer ID that is never re-scoped to the authorized domain. Attackers can enumerate sequential backup IDs to read another tenant's backup metadata, irrecoverably delete another tenant's backup snapshots, or trigger unauthorized restoration of another tenant's backup job with root privileges.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Usmannasir Cyberpanel — versions 0, b1984603f9b0099b39bca46fea176e53b6d4d601
Weakness classification (CWE)
References
- github.com/usmannasir/cyberpanel/commit/b1984603f9b0099b39bca46fea176e53b6d4d601 (patch)
- github.com/usmannasir/cyberpanel/issues/1828 (issue-tracking, technical-description, exploit)
- www.vulncheck.com/advisories/cyberpanel-incbackups-idor-via-sequential-backup-id (third-party-advisory)
Frequently asked questions
- What is CVE-2026-65917?
- CVE-2026-65917 is a high-severity vulnerability in Usmannasir Cyberpanel, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.8/10. Published 2026-07-23.
- How severe is CVE-2026-65917?
- High severity. CVSS v3 base score is 8.8 out of 10.