ElasticCVE-2026-72649
Elasticsearch: unsafe deserialization
High8.8CVE-2026-72649 · Published Sep 1, 2026 · updated Sep 2, 2026
Deserialization of Untrusted Data (CWE-502) in the Elasticsearch machine learning component can lead to remote code execution via Object Injection (CAPEC-586). A specially crafted trained model artifact could cause attacker-controlled logic to execute with a materially broader system-call surface than intended. Exploitation requires an authenticated user with sufficient privileges to create and deploy trained models.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Elasticsearch Product | >= 8.0.0, <= 8.19.19 | No fix yet |
| >= 9.0.0, <= 9.4.4 | No fix yet | |
| <= 9.5.0 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-502
More Elastic advisories
All Elastic| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 1 | Elasticsearch: missing authorization | Medium5.4 | No fix yet |
| Sep 1 | Elastic Kibana: missing authorization | Medium6.5 | No fix yet |
| Sep 1 | Elastic Kibana: path traversal | High7.3 | No fix yet |
| Sep 1 | Elastic Kibana: missing authorization | Medium4.3 | No fix yet |
| Sep 1 | Elastic Kibana: missing authorization | Medium4.3 | No fix yet |
| Sep 1 | Elasticsearch: request smuggling | Medium5.9 | No fix yet |