Elastic patches multiple Elasticsearch, Kibana flaws
ANSSI advisory details multiple vulnerabilities in Elasticsearch and Kibana that can enable denial of service, data confidentiality/integrity breaches, and SSRF.
Sourcecert.ssi.gouv.fr — open the original
What to check
- Applies to
- The 20 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
France's CERT-FR (ANSSI) issued an advisory covering a large batch of vulnerabilities affecting Elastic's Elasticsearch and Kibana products across versions 8.x, 9.3.x, and 9.4.x. The flaws span multiple risk categories including remote denial of service, unauthorized data disclosure, data integrity compromise, security policy bypass, and server-side request forgery (SSRF). No evidence of active exploitation is mentioned in the advisory; it is a standard vendor patch notification aggregating numerous Elastic security bulletins (ESA-2026-54 through ESA-2026-74) published on 21 July 2026.
The advisory references a large number of CVEs, including one older entry (CVE-2018-17245) alongside many 2026-dated identifiers, suggesting a consolidated patch release addressing both recently discovered and previously known issues. Organizations running affected Elasticsearch or Kibana versions below the fixed releases (8.19.19, 9.3.8, 9.4.4) should apply vendor patches per the referenced bulletins. Given the breadth of products deployed for search, logging, and observability, unpatched instances could expose sensitive indexed data or disrupt service availability.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0906
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