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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 5.9
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS probability
- 0.21%
- CWE
- CWE-444
- Published
- 2026-09-01
- Last modified
- 2026-09-01
Affected products
- Elastic Elasticsearch
- Elastic Elasticsearch
- Elastic Elasticsearch
Weakness type
Related vulnerabilities
- CVE-2026-81356 — Visual Studio Code Security Feature Bypass Vulnerability
- CVE-2026-19203 — A client may issue specially crafted HTTP/1.1 chunked requests to a Jetty server that cause Jetty...
- CVE-2026-18540 — undici vulnerable to downstream response splitting via retry interceptor
- CVE-2026-84380 — HTTPX2: Conflicting Content-Length and Transfer-Encoding headers can be auto-generated
- CVE-2026-84363 — Hono: Query parser reads parameters after the URL fragment, causing cache-key and proxy interpretation differentials
- CVE-2026-73812 — inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length
- CVE-2026-73276 — inets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping i
- CVE-2026-66357 — inets,httpd:HTTP Request Smuggling via obs-fold Header Continuation