What’s Vulnerable › Vulnerabilities
CVE-2026-49091: Improper Output Neutralization for Logs in Kibana Leading to Log Injection
- Severity: high (CVSS 8.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-01 · updated 2026-10-25
- Weakness: CWE-116
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.
Affected products
- Kibana: from 7.0.0 before 7.17.15; from 8.0.0 before 8.11.1 — fixed in 7.17.15, 8.11.1
How to fix
Upgrade to a fixed version: Kibana 7.17.15, 8.11.1. Check the vendor advisory for mitigations.
References
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