CVE-2026-63263
A remote, authenticated attacker can exploit multiple vulnerabilities in Elasticsearch to conduct a denial of service attack and disclose confidential information.
CSIRTS triage
- What
- A remote, authenticated attacker can exploit multiple vulnerabilities in Elasticsearch to conduct a denial of service attack and disclose confidential information.
- Who is affected
- Authenticated users of Elasticsearch are affected.
- Urgency
- Remediation is medium urgency as exploitation is possible but not currently being actively exploited.
- Action
- Apply the latest updates for Elasticsearch to mitigate the vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-63263
Get an email if CVE-2026-63263 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.
Advisory coverage (4)
- medium[NEW] [medium] Elasticsearch: Multiple vulnerabilities allow DoS and information disclosurecert-bund · 2026-07-22
- mediumCVE-2026-63263: Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via…nvd · 2026-07-22
- unknownMultiple vulnerabilities in Elastic products (July 22, 2026)cert-fr-avis · 2026-07-22
- mediumCVE-2026-63263: Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Servicemsrc · 2026-07-14
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-63263)