Is CVE-2024-21690 actively exploited?

No active exploitation of CVE-2024-21690 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2024-21690 be exploited remotely?

Yes. CVE-2024-21690 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2024-21690?

CVE-2024-21690 has a CVSS score of 8.2 (HIGH).

HOME VULNERABILITIESCVE-2024-21690

HIGH

CVE-2024-21690

CWE-79Published: August 21, 2024· Updated: Jun 17, 2026

8.2

CVSS v3.1

Official Description

This High severity Reflected XSS and CSRF (Cross-Site Request Forgery) vulnerability was introduced in versions 7.19.0, 7.20.0, 8.0.0, 8.1.0, 8.2.0, 8.3.0, 8.4.0, 8.5.0, 8.6.0, 8.7.1, 8.8.0, and 8.9.0 of Confluence Data Center and Server.

This Reflected XSS and CSRF (Cross-Site Request Forgery) vulnerability, with a CVSS Score of 7.1, allows an unauthenticated attacker to execute arbitrary HTML or JavaScript code on a victims browser and force a end user to execute unwanted actions on a web application in which they're currently authenticated which has high impact to confidentiality, low impact to integrity, no 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 greater than or equal to 7.19.26

* Confluence Data Center and Server 8.5: Upgrade to a release greater than or equal to 8.5.14

* Confluence Data Center and Server 9.0: Upgrade to a release greater than or equal to 9.0.1

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).

This vulnerability was reported via our Bug Bounty program.

NVD Source

Technical Analysis

CVE-2024-21690 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.2.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.