Auth bypass in Ntop Ntopng
CVE-2026-86090
ntopng before 6.7.260717 fails to perform authorization checks in the delete endpoints and recipients REST v2 handlers. Authenticated non-administrator users can issue POST requests to irreversibly delete all configured notification endpoints and recipients, silencing all alerts.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/ntop/ntopng (product)
- github.com/ntop/ntopng/blob/f41cc1beff90e40e12bbc2cc135bdbf649ec559f/scripts/lu… (technical-description)
- github.com/ntop/ntopng/blob/f41cc1beff90e40e12bbc2cc135bdbf649ec559f/scripts/lu… (technical-description)
- github.com/ntop/ntopng/commit/7d830f31af367745431c5d92e2e82fc432f6bdd8 (patch)
- github.com/ntop/ntopng/security/advisories/GHSA-m22w-f647-vx88 (vendor-advisory)
- www.vulncheck.com/advisories/ntopng-before-6.7.260717-missing-authorization-on-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-86090?
- CVE-2026-86090 is a high-severity vulnerability in Ntop Ntopng, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-09-04.
- How severe is CVE-2026-86090?
- High severity. CVSS v3 base score is 7.1 out of 10.