UpHeron
All vulnerabilities

Servers and applications

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.

Severity
Medium 5.9
Published
1 Sept 2026
Last changed
2 Sept 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.19.20, 9.4.5
Sources
NVD

Affected software

SoftwareAffected versions
ElasticsearchServers and applications · cpe:a:elastic:elasticsearch
  • From 8.18.0 before 8.19.20
  • From 9.0.0 before 9.4.5
  • Version 9.5.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-78605
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-78605