CVE-2026-49091
Last modified
CVE-2026-49091 is a high-severity vulnerability rated 8/10 on the CVSS scale. Improper Output Neutralization for Logs (CWE-117) in Kibana can lead to log injection via Log Injection-Tampering-Forging (CAPEC-93). An attacker can supply specially crafted input that is written to log files without proper neutralization. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
Improper Output Neutralization for Logs (CWE-117) in Kibana can lead to log injection via Log Injection-Tampering-Forging (CAPEC-93). An attacker can supply specially crafted input that is written to log files without proper neutralization. When the log files are subsequently viewed in a terminal that interprets control sequences, the injected content may alter the displayed log data.
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Elastic | Kibana | >= 7.0.0, < 7.17.15 |
| Elastic | Kibana | >= 8.0.0, < 8.11.1 |
References
- https://discuss.elastic.co/t/kibana-7-17-15-8-11-1-security-update-esa-2026-53Vendor Advisory, Mitigation
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-49091?
How severe is CVE-2026-49091?
How do I fix CVE-2026-49091?
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-2026-49085Unauthenticated PHP Object Injection in WP Insightly for Con…9.8
- CVE-2026-49086Improper Input Validation, Unintended Proxy or Intermediary …6.5
- CVE-2026-49087Allocation of Resources Without Limits or Throttling (CWE-77…6.5
- CVE-2026-49088Insertion of Sensitive Information into Log File (CWE-532) i…4.4
- CVE-2026-4909A weakness has been identified in code-projects Exam Form Su…2.4
- CVE-2026-49090Uncontrolled Resource Consumption (CWE-400) in Elasticsearch…6.5
- CVE-2026-49092Unintended Proxy or Intermediary ('Confused Deputy') (CWE-44…4.3
- CVE-2026-49093Server-Side Request Forgery (CWE-918) in Kibana can allow an…7.7
- CVE-2026-49094Uncontrolled Resource Consumption (CWE-400) in Kibana can le…6.5
- CVE-2026-49095Improper Input Validation (CWE-20) in the Kibana Fleet agent…6.5
- CVE-2026-49097Improper Input Validation, Improper Neutralization of Specia…6.5
- CVE-2026-49098Improper Input Validation, Improper Neutralization of Specia…5.3
Are you affected by CVE-2026-49091?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
