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Active filters (1):Package: pkg:maven/com.atlassian.confluence/confluence-data-center-server

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CVE-2026-21580 is a high-severity vulnerability in Atlassian Confluence Data Center and Server that allows unauthenticated attackers to execute stored cross-site scripting (XSS) attacks, escalate privileges, and exploit security misconfigurations. It affects multiple versions starting from 7.1.1 through various releases up to 10.2.0. The vulnerability enables execution of arbitrary HTML or JavaScript in victims' browsers and unauthorized actions as higher-privileged users. Atlassian recommends upgrading to fixed versions 9.2.21 or later for the 9.2 branch and 10.2.13 or later for the 10.2 branch.

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This High severity Remote Code Execution (RCE) vulnerability was introduced in version 2.1.0 of Confluence Data Center and Server. Remote Code Execution (RCE) vulnerability, with a CVSS Score of 8.3 and a CVSS Vector of CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H allows an unauthenticated attacker to remotely expose assets in your environment susceptible to exploitation which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires user interaction. Atlassian recommends that Confluence Data Center and Server 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 and Server 7.19: Upgrade to a release 7.19.18, or any higher 7.19.x release * Confluence Data Center and Server 8.5: Upgrade to a release 8.5.5 or any higher 8.5.x release * Confluence Data Center and Server 8.7: Upgrade to a release 8.7.2 or any higher release See the release notes (https://confluence.atlassian.com/doc/confluence-release-notes-327.html ). You can download the latest version of Confluence Data Center and Server from the download center (https://www.atlassian.com/software/confluence/download-archives).

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