CVE-2026-63262 is a missing authorization vulnerability (CWE-862) in Elastic Kibana 9.4.0. It enables an attacker with low privileges to cause unauthorized disclosure of information across Kibana spaces by circumventing space-level access controls via crafted user input. The vulnerability has a CVSS 3.1 base score of 4.3, reflecting limited impact confined to confidentiality. There is no vendor advisory or patch available at this time, and no known exploits have been reported in the wild.

An attacker with network access and low privileges can exploit this vulnerability to gain unauthorized read access to information in Kibana spaces they should not access. The impact is limited to confidentiality, with no effect on integrity or availability. This could lead to exposure of sensitive data across Kibana spaces.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to Kibana to trusted users and monitor for suspicious activity related to space access. Avoid granting unnecessary privileges that could be leveraged to exploit this vulnerability.