CVE-2024-21683: This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center…
- Is it exploited?
Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .
VulnCheck KEV lists it since . It cites 46 public reports, the first from .
- How likely is exploitation in the next 30 days?
- 88.3%
EPSS score, percentile 99.8 of all scored records. A probability estimated by FIRST, not a report of exploitation.
CISA's SSVC assessment in the CVE record lists exploitation as poc.
- How severe?
- 7.2 High
CVSS v3.1 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- 8.9.0
- 8.8.0 to 8.8.1
- 8.7.1 to 8.7.2
- 8.6.0 to 8.6.2
- 8.5.0 to 8.5.8
- 8.4.0 to 8.4.5
and 6 more in the table below
Source: CISA KEV 2026.10.29, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
Description
This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center and Server. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.2, allows an authenticated attacker to execute arbitrary code which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires no 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. 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 found internally.
Source: CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
Versions by product, as listed in the CVE record (1 product)
| Status | Versions |
|---|---|
| Affected | 8.9.0 |
| Affected | 8.8.0 to 8.8.1 |
| Affected | 8.7.1 to 8.7.2 |
| Affected | 8.6.0 to 8.6.2 |
| Affected | 8.5.0 to 8.5.8 |
| Affected | 8.4.0 to 8.4.5 |
| Affected | 8.3.0 to 8.3.4 |
| Affected | 8.2.0 to 8.2.3 |
| Affected | 8.1.0 to 8.1.4 |
| Affected | 8.0.0 to 8.0.4 |
| Affected | 7.20.0 to 7.20.3 |
| Affected | 7.19.0 to 7.19.21 |
And 3 more version entries in the CVE record.
Versions the record lists as unaffected: 8.9.1 to 8.9.2, 8.5.9 to 8.5.10, 7.19.22 to 7.19.23.
Source: CVE List, as of . About the data.
Weakness
CWE-94
- CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
References
2
Known exploited Atlassian vulnerabilities
- CVE-2026-21589: Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
- CVE-2021-26086: Atlassian Jira Server and Data Center Path Traversal Vulnerability
- CVE-2023-22527: Atlassian Confluence Data Center and Server Template Injection Vulnerability
- CVE-2023-22518: Atlassian Confluence Data Center and Server Improper Authorization Vulnerability
- CVE-2023-22515: Atlassian Confluence Data Center and Server Broken Access Control Vulnerability