Information disclosure in Argoproj Argo-cd
CVE-2026-42880
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to before 3.3.9, there is a missing authorization and data-masking gap in Argo CD's ServerSideDiff endpoint that allow…
Vulnerability class: Information Disclosure
EPSS: 0.000 (2.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
Affected products
- Argoproj Argo-cd — versions >= 3.2.0, < 3.2.11, >= 3.3.0, < 3.3.9
- Argoproj Argo_cd
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42880?
- CVE-2026-42880 is a critical-severity vulnerability in Argoproj Argo-cd, classified under Information Disclosure. CVSS score: 9.6/10. Published 2026-05-07.
- How severe is CVE-2026-42880?
- Critical severity. CVSS v3 base score is 9.6 out of 10.
- Is CVE-2026-42880 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.