CVE-2024-21686 json
This High severity Stored XSS vulnerability was introduced in versions 7.13 of Confluence Data Center and Server.
published 2024-07-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-19302
- cvss
- 7.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
This High severity Stored XSS vulnerability was introduced in versions 7.13 of Confluence Data Center and Server.
This Stored XSS vulnerability, with a CVSS Score of 7.3, allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victims browser which has high impact to confidentiality, high 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 listed on this CVE
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.
Patch / fix
- Atlassian Confluence Data Center 7.19.22 to 7.19.25, 8.5.9 to 8.5.12, 8.9.1 to 8.9.4
- Atlassian Confluence Server 7.19.22 to 7.19.25, 8.5.9 to 8.5.12
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
Affected products
- Atlassian Confluence Data Center
- Atlassian Confluence Server
- atlassian confluence_data_center
- atlassian confluence_server
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
confluence.atlassian.com
/pages/viewpage.action?pageId=1417150917
vendor-advisory
-
jira.atlassian.com
/browse/CONFSERVER-96134
issue-tracking
Sources
- CVE List CVE-2024-21686
- NVD CVE-2024-21686
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.