CVE-2026-72632
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk14th percentile - higher than 14% of all known CVEs
Summary
Observable Discrepancy in Kibana Fleet leads to information disclosure. Fleet removes the Elasticsearch API key value from agent listing responses, but accepts caller-supplied filters evaluated with Kibana's internal privileges, creating a side channel to reconstruct the full API key.
Risk Assessment
The risk includes disclosure of Elasticsearch API keys, potentially leading to unauthorized access to data and Elasticsearch resources.
Recommendation
Restrict filter usage for unprivileged users and apply Kibana Fleet patches.
Original NVD description (English source)
Observable Discrepancy (CWE-203) in Kibana Fleet can lead to information disclosure via Excavation (CAPEC-116). Fleet removes the Elasticsearch API key value of an enrolled Elastic Agent from the responses of its agent listing capability, but that capability accepted caller-supplied filter expressions over the stored field that holds the value, and evaluated them with Kibana's own internal Elasticsearch privileges rather than the caller's. Because the number of matching agents is reported back to the caller, the difference between a matching and a non-matching filter formed a side channel from which the full API key value could be reconstructed one character at a time with a short sequence of requests.