CVE-2026-78605
An attacker can exploit multiple vulnerabilities in Elasticsearch to perform a Denial of Service attack, execute arbitrary code, bypass security measures, or disclose confidential information.
CSIRTS triage
- What
- Multiple vulnerabilities in Elasticsearch enable Denial of Service, arbitrary code execution, security bypass, and information disclosure.
- Who is affected
- Elasticsearch deployments across all exposed instances.
- Urgency
- High severity with multiple critical attack vectors including code execution; immediate patching required.
- Action
- Apply the latest security patches for Elasticsearch.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
Advisory coverage (3)
- high[NEW] [high] Elasticsearch: Multiple Vulnerabilitiescert-bund · 2026-09-02
- unknownMultiple vulnerabilities in Elastic products (02 September 2026)cert-fr-avis · 2026-09-02
- mediumCVE-2026-78605: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') (CWE-444) in Elasticse…nvd · 2026-09-01
External references
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