CVE-2026-78605
Last modified
CVE-2026-78605 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Elastic | Elasticsearch | >= 8.18.0, < 8.19.20 |
| Elastic | Elasticsearch | >= 9.0.0, < 9.4.5 |
| Elastic | Elasticsearch | 9.5.0 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-78605?
How severe is CVE-2026-78605?
How do I fix CVE-2026-78605?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-7860A possible information disclosure vulnerability exists in th…1.6
- CVE-2026-78600Incomplete Cleanup (CWE-459) in Elastic Cloud on Kubernetes …3.5
- CVE-2026-78601Missing Authorization (CWE-862) in Kibana can lead to inform…5.5
- CVE-2026-78602Improper Limitation of a Pathname to a Restricted Directory …5.3
- CVE-2026-78603Missing Authorization (CWE-862) in Kibana can lead to inform…4.3
- CVE-2026-78604Incorrect Permission Assignment for Critical Resource (CWE-7…7.8
- CVE-2026-78606Incorrect Authorization (CWE-863) in Kibana can lead to unau…4.2
- CVE-2026-78607Missing Authorization (CWE-862) in the Elasticsearch custom …7.1
- CVE-2026-78608Missing Authorization (CWE-862) in Kibana can lead to inform…6.5
- CVE-2026-78609Incorrect Authorization (CWE-863) in Elastic Cloud on Kubern…5.4
- CVE-2026-7861Deserialization of untrusted data vulnerability in Next4Biz …9.8
- CVE-2026-78610WatchGuard Dimension's Web UI exposes an administrator passp…8.4
Are you affected by CVE-2026-78605?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST