XSS in Atlassian Confluence Data Center
CVE-2024-21690
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (54.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Atlassian Confluence Data Center — versions 8.9.0 to 8.9.5, 8.8.0 to 8.8.1, 8.7.1 to 8.7.2
- Atlassian Confluence Data Center
- Atlassian Confluence Server — versions 8.5.0 to 8.5.12, 8.4.0 to 8.4.5, 8.3.0 to 8.3.4
- Atlassian Confluence Server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- confluence.atlassian.com/pages/viewpage.action (Vendor Advisory)
- jira.atlassian.com/browse/CONFSERVER-97720 (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2024-21690?
- CVE-2024-21690 is a high-severity vulnerability in Atlassian Confluence Data Center, classified under Cross-site Scripting. CVSS score: 8.2/10. Published 2024-08-21.
- How severe is CVE-2024-21690?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2024-21690 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.