{"cve":"CVE-2024-21678","nvd":{"published":"2024-02-20T18:15:50.897","modified":"2026-06-17T07:09:58.530","status":"Analyzed","description":"This High severity Stored XSS vulnerability was introduced in version 2.7.0 of Confluence Data Center.\r\n\r\nThis Stored XSS vulnerability, with a CVSS Score of 8.5, allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victims browser which has high impact to confidentiality, low impact to integrity, no impact to availability, and requires no user interaction.\r\nData Center\r\n\r\nAtlassian recommends that Confluence Data Center customers upgrade to the latest version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions:\r\n||Affected versions||Fixed versions||\r\n|from 8.7.0 to 8.7.1|8.8.0 recommended or 8.7.2|\r\n|from 8.6.0 to 8.6.1|8.8.0 recommended|\r\n|from 8.5.0 to 8.5.4 LTS|8.8.0 recommended or 8.5.5 LTS or 8.5.6 LTS|\r\n|from 8.4.0 to 8.4.5|8.8.0 recommended or 8.5.6 LTS|\r\n|from 8.3.0 to 8.3.4|8.8.0 recommended or 8.5.6 LTS|\r\n|from 8.2.0 to 8.2.3|8.8.0 recommended or 8.5.6 LTS|\r\n|from 8.1.0 to 8.1.4|8.8.0 recommended or 8.5.6 LTS|\r\n|from 8.0.0 to 8.0.4|8.8.0 recommended or 8.5.6 LTS|\r\n|from 7.20.0 to 7.20.3|8.8.0 recommended or 8.5.6 LTS|\r\n|from 7.19.0 to 7.19.17 LTS|8.8.0 recommended or 8.5.6 LTS or 7.19.18 LTS or 7.19.19 LTS|\r\n|from 7.18.0 to 7.18.3|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|\r\n|from 7.17.0 to 7.17.5|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|\r\n|Any earlier versions|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|\r\nServer\r\n\r\nAtlassian recommends that Confluence Server customers upgrade to the latest 8.5.x LTS version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions:\r\n\r\n \r\n||Affected versions||Fixed versions||\r\n|from 8.5.0 to 8.5.4 LTS|8.5.5 LTS or 8.5.6 LTS recommended |\r\n|from 8.4.0 to 8.4.5|8.5.6 LTS recommended|\r\n|from 8.3.0 to 8.3.4|8.5.6 LTS recommended|\r\n|from 8.2.0 to 8.2.3|8.5.6 LTS recommended|\r\n|from 8.1.0 to 8.1.4|8.5.6 LTS recommended|\r\n|from 8.0.0 to 8.0.4|8.5.6 LTS recommended|\r\n|from 7.20.0 to 7.20.3|8.5.6 LTS recommended|\r\n|from 7.19.0 to 7.19.17 LTS|8.5.6 LTS recommended or 7.19.18 LTS or 7.19.19 LTS|\r\n|from 7.18.0 to 7.18.3|8.5.6 LTS recommended or 7.19.19 LTS|\r\n|from 7.17.0 to 7.17.5|8.5.6 LTS recommended or 7.19.19 LTS|\r\n|Any earlier versions|8.5.6 LTS recommended or 7.19.19 LTS|\r\n\r\nSee 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]).\r\n\r\nThis vulnerability was reported via our Bug Bounty program.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N","score":8.5},"cwes":["CWE-79"],"references":["https://confluence.atlassian.com/pages/viewpage.action?pageId=1354501606","https://jira.atlassian.com/browse/CONFSERVER-94513","https://confluence.atlassian.com/pages/viewpage.action?pageId=1354501606","https://jira.atlassian.com/browse/CONFSERVER-94513"],"products":["atlassian:confluence_data_center","atlassian:confluence_server"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2024-21678","score":0.00471,"percentile":0.40799,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}