What’s Vulnerable › Vulnerabilities
CVE-2026-82294: Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-26 · updated 2026-09-29
- Weakness: CWE-400
Description
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130).
Affected products
- Elasticsearch: from 8.0.0 before 8.19.21; from 9.0.0 before 9.4.6; from 9.5.0 before 9.5.3 — fixed in 8.19.21, 9.4.6, 9.5.3
How to fix
Upgrade to a fixed version: Elasticsearch 8.19.21, 9.4.6, 9.5.3. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-82294 or the next vulnerability affects your stack