Auth bypass in Argoproj Argo-Rollouts
CVE-2026-82277
Argo Rollouts dashboard through 1.10.0 binds to all interfaces and exposes mutating Rollout operations without authentication, authorization, or CSRF protection. Attackers on the same network can invoke PromoteRollout, AbortRollout, RestartRollout, SetRolloutImage, UndoRollout, and RetryRollout operations across all namespaces accessible to the operator's kubeconfig.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.008 · change: +0.003
Affected products
Weakness classification (CWE)
References
- github.com/argoproj/argo-rollouts/issues/4747 (issue-tracking)
- github.com/argoproj/argo-rollouts (product)
- github.com/argoproj/argo-rollouts/blob/4e6a2798688e22868340d9871a3c8d78371f1568… (technical-description)
- www.vulncheck.com/advisories/argo-rollouts-dashboard-unauthenticated-mutating-o… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82277?
- CVE-2026-82277 is a critical-severity vulnerability in Argoproj Argo-Rollouts, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-08-28.
- How severe is CVE-2026-82277?
- Critical severity. CVSS v3 base score is 9.8 out of 10.