CVE-2026-21579

The record

This High severity Information Disclosure vulnerability was introduced in versions 7.17.0, 7.19.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Information Disclosure vulnerability, with a CVSS Score of 8.2, allows an unauthenticated attacker to view sensitive information via an Information Disclosure vulnerability. Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.22 Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.14 See the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]). This vulnerability was reported via our Atlassian (Internal) program.

Affected packages

Related vulnerabilities

• CVE-2026-62979 jack lets users share media libraries through their Radarr/Sonarr stack, peer-to-peer. CWE-200
• CVE-2026-55098 Arc is an open, SQL-native time-series database for telemetry. CWE-200
• CVE-2026-119331 Ladybird is a truly independent web browser. CWE-200
• CVE-2026-62264 PDF Reader MCP is a Model Context Protocol server for reading PDF documents. CWE-200
• CVE-2026-110305 The Advanced Custom Fields: Extended plugin for WordPress is vulnerable to Sensitive… CWE-200
• CVE-2026-61730 SOCFortress CoPilot focuses on providing a single pane of glass for all your security… CWE-200
• CVE-2026-119570 Parse Server from 9.7.0 before 9.10.5-alpha.7 contains an information disclosure… CWE-200
• CVE-2026-14467 An information disclosure vulnerability in the Forocoches comments editor that allows an… CWE-200