Is CVE-2026-115290 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-115290?

CVE-2026-115290 has a CVSS v3 severity of HIGH (7.5).

Back

CVE-2026-115290

Description

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Serialized Data with Nested Payloads (CAPEC-230). An unauthenticated attacker with network access to the remote cluster server interface of a node can send a specially crafted request that causes the node to terminate. No credentials are required. The attacker can repeat the request against each reachable node.