CVE-2026-78605

published 2026-09-01

CVE-2026-78605: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') (CWE-444) in Elasticsearch can lead to information disclosure via HTTP Request…

Priority P4 33 medium 5.9 CVSS 3.1

AV N AC H PR N UI N S U C H I N A N

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.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
elastic	elasticsearch	—	—
elastic	elasticsearch	>= 8.18.0 < 8.19.20	8.19.20
elastic	elasticsearch	8.18.0 – 8.19.19	—
elastic	elasticsearch	>= 9.0.0 < 9.4.5	9.4.5
elastic	elasticsearch	9.0.0 – 9.4.4	—

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CWE-444