Information disclosure in Confluence Data Center - CVE-2026-21579
Published: July 21, 2026 / Updated: July 26, 2026
Vulnerability identifier: #VU139387
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-21579
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to information disclosure in Confluence Data Center when handling requests. A remote attacker can send a request to disclose sensitive information.
Affected software
Confluence Data Center
How to mitigate CVE-2026-21579
Install security update from vendor's website.
Confluence Data Center - addressed in versions 9.2.22, 10.2.14