CVE-2026-72643

Description

Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. A username is not unique across Elasticsearch authentication realms, so two distinct principals that share a username in different realms are treated as the same owner. This discloses the configuration and instructions of an agent the caller does not own, and allows that agent to be altered or removed.

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Produits concernés

• Elastic Kibana

Scores CVSS

Faiblesses (CWE)

• CWE-863

Références

• https://discuss.elastic.co/t/kibana-9-4-5-9-5-1-security-update-esa-2026-124/389538 Vendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories