CVE-2026-56143

Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). A user with elevated privileges can submit a specially crafted request that causes excessive memory consumption, which may render the affected node unavailable.

  • Published Sep 1, 2026
  • CVSS 4.9 medium
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-56143 at the National Vulnerability Database