Vulnerability details
CVE-2026-42398
Elastic Kibana
Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
CVSS 3.1
7.7High
Official description
Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted target, an attacker can cause Kibana to issue outbound requests to destinations that the egress restriction controls were intended to block.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.7High | 3.1 | CVEProject cvelistV5 (CNA) (elastic) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Elastic | Kibana | 9.0.0 ≤ v ≤ 9.2.7 | CVEProject cvelistV5 (CNA) |
| Elastic | Kibana | 9.3.0 ≤ v ≤ 9.3.1 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-05-28
- Last updated
- 2026-05-29
- State
- Published
- Assigner (CNA)
- elastic
Exploit prediction (EPSS)
0.3%
Probability of exploitation in 30 days
22.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-918Server-Side Request Forgery (SSRF)