CVE•Published 2026-07-24•Modified 2026-09-08•1 article on news•4 live references•NVD data
CVE-2026-17107
Vulnerability data via NVD (ingested)
CVSS v3.1
8.5
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS percentile
28
Exploit Prediction Scoring System · top 72% of all CVEs
Weaknesses (CWE)
Description
A flaw was found in the cluster-proxy service-proxy component used in Red Hat Advanced Cluster Management for Kubernetes (RHACM) and multicluster-engine (MCE). The service-proxy appends impersonation group headers to proxied requests without first removing caller-supplied values, and the spoke ServiceAccount holds unrestricted impersonation permissions. An authenticated hub principal can inject an Impersonate-Group header to escalate to cluster-admin on every managed cluster.
Timeline
Published 2026-07-24
Modified 2026-09-08
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).
More intel sources (5)
Shodan report
vuln:CVE-2026-17107Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-17107Censys host search filtered to this CVE id.
grep.app
CVE-2026-17107Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-17107GitHub code search for direct mentions.
Google dork
"CVE-2026-17107" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-17107 on GitHub.