Confluence Data Center vulnerabilities
4 known CVE vulnerabilities in Confluence Data Center, translated and rated.
- CVE-2026-21588High
A High severity Denial of Service (DoS) vulnerability in Confluence Data Center versions 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0. An authenticated attacker can cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a host connected to a network.
- CVE-2026-21586High
A High severity Improper Authorization vulnerability in Confluence Data Center versions 7.4.0, 7.13.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0. An authenticated attacker can gain unintended access, potentially leading to exposure of resources or functionality, and possibly enabling sensitive information disclosure or arbitrary code execution.
- CVE-2026-21579High
Information disclosure vulnerability in Confluence Data Center. An unauthenticated attacker can access sensitive information without authentication.
- CVE-2026-21577Medium
High severity DoS vulnerability in Confluence Data Center versions 9.0.1 through 10.2.0. An authenticated attacker can cause temporary or permanent unavailability of resources by disrupting services of a network host.

