CVE Explorer
CVE-2026-56151
Improper Input Validation (CWE-20) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153). An authenticated user can submit a specially crafted Fleet policy input that is not correctly validated, which can render Fleet agent, server, and policy management functionality unavailable.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Kibana","vendor":"Elastic","versions":[{"lessThanOrEqual":"9.3.5","status":"affected","version":"9.0.0","versionType":"semver"},{"lessThanOrEqual":"8.19.16","status":"affected","version":"8.0.0","versionType":"semver"},{"lessThanOrEqual":"9.4.2","status":"affected","version":"9.4.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:b9cc51f5b9cfcadd6d886be7f7fbafb37111fc4ff7f2eb4f8c601e9fbc108027 · sha256:65d3e17d0cbbf08e… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:b9cc51f5b9cfcadd6d886be7f7fbafb37111fc4ff7f2eb4f8c601e9fbc108027 · sha256:65d3e17d0cbbf08e… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:b9cc51f5b9cfcadd6d886be7f7fbafb37111fc4ff7f2eb4f8c601e9fbc108027 · sha256:65d3e17d0cbbf08e… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://discuss.elastic.co/t/kibana-8-19-17-9-3-6-9-4-3-security-update-esa-2026-45"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:b9cc51f5b9cfcadd6d886be7f7fbafb37111fc4ff7f2eb4f8c601e9fbc108027 · sha256:65d3e17d0cbbf08e… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.