CVE Explorer
CVE-2026-42401
Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch index could persist crafted markup which, when subsequently rendered through an affected Kibana view by another user, was not sufficiently sanitized. Successful exploitation could result in unauthorized UI manipulation and outbound network requests issued from the viewing user's browser session.
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":"9.3.4","status":"affected","version":"9.0.0","versionType":"semver"},{"lessThanOrEqual":"8.19.15","status":"affected","version":"8.0.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a73f63b98b6681e89528c39e12612cd9da962a24c250488eb27bffcee970ca49 · sha256:0a4351c25c980b0d… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.1,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a73f63b98b6681e89528c39e12612cd9da962a24c250488eb27bffcee970ca49 · sha256:0a4351c25c980b0d… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a73f63b98b6681e89528c39e12612cd9da962a24c250488eb27bffcee970ca49 · sha256:0a4351c25c980b0d… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-security-update-esa-2026-34/386552"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a73f63b98b6681e89528c39e12612cd9da962a24c250488eb27bffcee970ca49 · sha256:0a4351c25c980b0d… · /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.