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VulnerabilityPublished

CVE-2026-115290: Elastic Elasticsearch · Uncontrolled Recursion

Affects Elastic ElasticsearchSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 3 Nov 2026, 17:58 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (elastic)CVSS 3.17.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
ElasticElasticsearchAffected
  • >=8.10.0 <=8.19.23
  • >=9.0.0 <=9.4.8
  • >=9.5.0 <=9.5.5
Fixed in–

AI-suggested

Until a fix is available, restrict network access to the Elasticsearch cluster server interface to trusted sources only to reduce exposure. Monitor vendor communications for official patches or mitigations.

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.

References

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