CVE-2026-78605 Affecting elasticsearch-9.4-advanced-compat package, versions <9.4.5-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-ELASTICSEARCH94ADVANCEDCOMPAT-19521042
- published4 Sept 2026
- disclosed1 Sept 2026
Introduced: 1 Sep 2026
NewCVE-2026-78605 (opens in a new tab)How to fix?
Upgrade Minimos:latest elasticsearch-9.4-advanced-compat to version 9.4.5-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream elasticsearch-9.4-advanced-compat package and not the elasticsearch-9.4-advanced-compat package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') (CWE-444) in Elasticsearch can lead to information disclosure via HTTP Request Smuggling (CAPEC-33). Under specific proxy deployment configurations, a network attacker could obtain confidential responses intended for other authenticated users.