Vulnerability Details CVE-2026-78605
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 11.3%
CVSS Severity
CVSS v3 Score 5.9
References
Products affected by CVE-2026-78605
-
cpe:2.3:a:elastic:elasticsearch:8.18.0
-
cpe:2.3:a:elastic:elasticsearch:8.18.1
-
cpe:2.3:a:elastic:elasticsearch:8.18.2
-
cpe:2.3:a:elastic:elasticsearch:8.18.3
-
cpe:2.3:a:elastic:elasticsearch:8.18.4
-
cpe:2.3:a:elastic:elasticsearch:8.18.5
-
cpe:2.3:a:elastic:elasticsearch:8.18.6
-
cpe:2.3:a:elastic:elasticsearch:8.18.7
-
cpe:2.3:a:elastic:elasticsearch:8.18.8
-
cpe:2.3:a:elastic:elasticsearch:8.19.0
-
cpe:2.3:a:elastic:elasticsearch:8.19.1
-
cpe:2.3:a:elastic:elasticsearch:8.19.10
-
cpe:2.3:a:elastic:elasticsearch:8.19.11
-
cpe:2.3:a:elastic:elasticsearch:8.19.12
-
cpe:2.3:a:elastic:elasticsearch:8.19.13
-
cpe:2.3:a:elastic:elasticsearch:8.19.14
-
cpe:2.3:a:elastic:elasticsearch:8.19.15
-
cpe:2.3:a:elastic:elasticsearch:8.19.16
-
cpe:2.3:a:elastic:elasticsearch:8.19.17
-
cpe:2.3:a:elastic:elasticsearch:8.19.18
-
cpe:2.3:a:elastic:elasticsearch:8.19.19
-
cpe:2.3:a:elastic:elasticsearch:8.19.2
-
cpe:2.3:a:elastic:elasticsearch:8.19.3
-
cpe:2.3:a:elastic:elasticsearch:8.19.4
-
cpe:2.3:a:elastic:elasticsearch:8.19.5
-
cpe:2.3:a:elastic:elasticsearch:8.19.6
-
cpe:2.3:a:elastic:elasticsearch:8.19.7
-
cpe:2.3:a:elastic:elasticsearch:8.19.8
-
cpe:2.3:a:elastic:elasticsearch:8.19.9
-
cpe:2.3:a:elastic:elasticsearch:9.5.0