CVE-2025-25018: 
Kibana vulnerability analysis and mitigation

CVE-2025-25018 is a high-severity stored Cross-Site Scripting (XSS) vulnerability affecting the Fleet and Integrations management interface within Kibana. The vulnerability was discovered and disclosed in October 2025, impacting multiple versions of Kibana including versions up to 9.1.4. The flaw received a CVSS v3.1 base score of 8.7 (High) (NVD, Security Online).

The vulnerability stems from improper validation of specified type of input in Kibana's Fleet and Integrations management interface. The vulnerability is characterized by a CVSS v3.1 vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N, indicating network accessibility, low attack complexity, and requiring low privileges with user interaction. The flaw is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation) (NVD).

When successfully exploited, the vulnerability allows embedded malicious payloads to execute within administrative dashboards, potentially compromising other users' sessions. The attack can lead to data theft, session hijacking, or privilege escalation within Kibana dashboards. The CVSS scoring indicates high impact on both confidentiality and integrity, though availability is not affected (Security Online).

Elastic has released patches for this vulnerability in versions 8.18.8, 8.19.5, 9.0.8, and 9.1.5. Users are strongly advised to upgrade to these patched versions or later releases to address the vulnerability. The company emphasizes the importance of timely updates as the vulnerability involves stored XSS vectors that can persist across user sessions (Security Online).