CVE•Published 2026-05-07•Modified 2026-05-11•1 article on news•5 live references•NVD data
CVE-2026-42880Argoproj · Argo_cd
Vulnerability data via NVD (ingested)
CVSS v3.1
9.6
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
EPSS percentile
—
Weaknesses (CWE)
Description
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 allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server's Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9.
Timeline
Published 2026-05-07
Modified 2026-05-11
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-42880Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Argoproj Argo Cd"All exposed Argoproj Argo Cd instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Argo Cd"HTTP body or banner mentions "Argo Cd" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-42880Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-42880Censys host search filtered to this CVE id.
grep.app
CVE-2026-42880Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-42880GitHub code search for direct mentions.
Google dork
"CVE-2026-42880" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.