What’s Vulnerable › Vulnerabilities
CVE-2026-26936: Inefficient Regular Expression Complexity in Kibana Leading to Denial of Service
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-02-26 · updated 2026-06-17
- Weakness: CWE-1333
Description
Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).
Affected products
- Kibana: from 8.0.0 before 8.19.11; from 9.0.0 before 9.2.5 — fixed in 8.19.11, 9.2.5
How to fix
Upgrade to a fixed version: Kibana 8.19.11, 9.2.5. Check the vendor advisory for mitigations.
References
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