Auth bypass in Ntop Ntopng
CVE-2026-86091
ntopng before 6.7.260717 fails to check user privileges in the pools bulk-delete endpoint, allowing authenticated non-administrators to delete all host pools and member bindings. Attackers can issue POST requests to the delete pools endpoint to irreversibly destroy every host pool, removing traffic policy bindings and visibility restrictions that may bypass security policies.
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:H/A:L.
EPSS exploit prediction
EPSS: 0.005 (42.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · 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-2026-86091?
- CVE-2026-86091 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-2026-86091?
- High severity. CVSS v3 base score is 7.1 out of 10.