Auth bypass in Kubero-Dev Kubero
CVE-2026-92720
Kubero through 3.1.1 fails to apply authentication guards to the notifications API endpoints, allowing unauthenticated attackers to read webhook secrets and service URLs. Attackers can retrieve stored credentials and register malicious webhooks to intercept pipeline events or suppress alerting by deleting existing configurations.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (50.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/kubero-dev/kubero/issues/753 (issue-tracking)
- github.com/kubero-dev/kubero (product)
- github.com/kubero-dev/kubero/blob/v3.1.1/server/src/notifications/notifications… (technical-description)
- github.com/kubero-dev/kubero/blob/v3.1.1/server/src/main.ts (technical-description)
- www.vulncheck.com/advisories/kubero-through-3.1.1-unauthenticated-notifications… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92720?
- CVE-2026-92720 is a critical-severity vulnerability in Kubero-Dev Kubero, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-09-16.
- How severe is CVE-2026-92720?
- Critical severity. CVSS v3 base score is 9.1 out of 10.