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Multiple Elastic Vulnerabilities Allow Remote Code Execution

Favicon for www.cert.ssi.gouv.fr CERT-FR Security Advisories
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Summary

CERT-FR issued advisory CERTFR-2026-AVI-0413 alerting organizations to multiple critical vulnerabilities in Elastic products (Kibana and Logstash, versions 8.x and 9.x). The vulnerabilities allow remote code execution, data integrity compromise, confidentiality breaches, and denial of service. Organizations using these products must update to patched versions immediately.

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What changed

CERT-FR published a security advisory covering multiple vulnerabilities in Elastic Kibana and Logstash products. Six distinct CVEs (CVE-2026-33458 through CVE-2026-33461, CVE-2026-33466, CVE-2026-4498) plus CVE-2015-4152 affect versions prior to the patched releases. The most severe vulnerabilities enable arbitrary remote code execution, allowing attackers to compromise affected systems entirely.

Organizations running Kibana or Logstash deployments face immediate security risks including potential data breaches and system compromise. All affected versions across the 8.x, 9.x, and 9.3.x branches require patching. Security teams should reference the linked Elastic security bulletins for patch procedures and apply updates according to their change management processes.

What to do next

  1. Identify all Kibana and Logstash instances running vulnerable versions (8.x < 8.9.14, 9.x < 9.2.8, 9.3.x < 9.3.3)
  2. Apply Elastic security patches from bulletins ESA-2026-21 through ESA-2026-29
  3. Verify system integrity and monitor for indicators of compromise

Archived snapshot

Apr 9, 2026

GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.

Premier Ministre S.G.D.S.N

Agence nationale
de la sécurité des
systèmes d'information

Paris, le 09 avril 2026 N° CERTFR-2026-AVI-0413 Affaire suivie par: CERT-FR

Avis du CERT-FR

Objet: Multiples vulnérabilités dans les produits Elastic

Gestion du document

| Référence | CERTFR-2026-AVI-0413 |
| Titre | Multiples vulnérabilités dans les produits Elastic |
| Date de la première version | 09 avril 2026 |
| Date de la dernière version | 09 avril 2026 |
| Source(s) | Bulletin de sécurité Elastic 385811 du 08 avril 2026
Bulletin de sécurité Elastic 385812 du 08 avril 2026
Bulletin de sécurité Elastic 385813 du 08 avril 2026
Bulletin de sécurité Elastic 385814 du 08 avril 2026
Bulletin de sécurité Elastic 385815 du 08 avril 2026
Bulletin de sécurité Elastic 385816 du 08 avril 2026 |
Une gestion de version détaillée se trouve à la fin de ce document.

Risques

  • Atteinte à l'intégrité des données
  • Atteinte à la confidentialité des données
  • Contournement de la politique de sécurité
  • Déni de service à distance
  • Exécution de code arbitraire à distance

Systèmes affectés

  • Kibana versions 8.x antérieures à 8.9.14
  • Kibana versions 9.3.x antérieures à 9.3.3
  • Kibana versions 9.x antérieures à 9.2.8
  • Logstash versions 8.x antérieures à 8.9.13
  • Logstash versions 9.3.x antérieures à 9.3.3
  • Logstash versions 9.x antérieures à 9.2.8

Résumé

De multiples vulnérabilités ont été découvertes dans les produits Elastic. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Documentation

Gestion détaillée du document

  1. le 09 avril 2026 Version initiale

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Source

Favicon for www.cert.ssi.gouv.fr
CERT-FR Security Advisories cert.ssi.gouv.fr/avis
Data Privacy & Cybersecurity

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Classification

Agency
CERT-FR
Published
April 9th, 2026
Instrument
Guidance
Legal weight
Non-binding
Stage
Final
Change scope
Substantive
Document ID
CERTFR-2026-AVI-0413

Who this affects

Applies to
Technology companies Government agencies Organizations operating vulnerable Elastic deployments
Industry sector
5112 Software & Technology
Activity scope
Software vulnerability patching Security patch deployment System security updates
Geographic scope
France FR

Taxonomy

Primary area
Cybersecurity
Operational domain
IT Security
Compliance frameworks
NIST CSF
Topics
Data Privacy Software & Technology

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