Technology · Atlassian
Atlassian Confluence Data Center vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 13 vulnerabilities in Atlassian Confluence Data Center: 0 in the last 7 days and 4 in the last 90 days, 9 of them critical and 9 exploited in the wild. The most recent, CVE-2026-21588, was published on 15 September 2026.
- Last 7 days
- 0
- Last 90 days
- 4
- Critical, all time
- 9
- Exploited in the wild
- 9
About Atlassian Confluence Data Center
Confluence Data Center is a self-managed collaboration and documentation platform designed for high availability and scale.
Latest Atlassian Confluence Data Center vulnerabilities
- CVE-2026-21588: Atlassian Confluence Data Center DoS in authenticated request handlinginfoCVSS 7.1EPSS 0.3%
- CVE-2026-21586: Atlassian Confluence Data Center improper authorizationinfoCVSS 7.1EPSS 0.3%
- CVE-2026-21579: Atlassian Confluence Data Center information disclosureinfoCVSS 8.2
- CVE-2026-21577: Atlassian Confluence Data Center denial of serviceinfoCVSS 7.1
- CVE-2023-22527: Atlassian Confluence Data Center and Server Template Injection Vulnerabilitycriticalexploited in the wildCVSS 10
- CVE-2023-22518: Atlassian Confluence Data Center and Server Improper Authorization Vulnerabilitycriticalexploited in the wildCVSS 10
- CVE-2023-22515: Atlassian Confluence Data Center and Server Broken Access Control Vulnerabilitycriticalexploited in the wildCVSS 10
- CVE-2022-26138: Atlassian Questions For Confluence App Hard-coded Credentials Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2022-26134: Atlassian Confluence Server and Data Center Remote Code Execution Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2021-26085: Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerabilitycriticalexploited in the wildCVSS 5.3
- CVE-2019-3396: Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2021-26084: Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2019-3398: Atlassian Confluence Server and Data Center Path Traversal Vulnerabilitycriticalexploited in the wildCVSS 8.8
Most severe Atlassian Confluence Data Center vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2023-22527: Atlassian Confluence Data Center and Server Template Injection Vulnerabilitycriticalexploited in the wildCVSS 10
- CVE-2023-22518: Atlassian Confluence Data Center and Server Improper Authorization Vulnerabilitycriticalexploited in the wildCVSS 10
- CVE-2023-22515: Atlassian Confluence Data Center and Server Broken Access Control Vulnerabilitycriticalexploited in the wildCVSS 10
- CVE-2022-26138: Atlassian Questions For Confluence App Hard-coded Credentials Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2022-26134: Atlassian Confluence Server and Data Center Remote Code Execution Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2021-26084: Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2019-3396: Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2019-3398: Atlassian Confluence Server and Data Center Path Traversal Vulnerabilitycriticalexploited in the wildCVSS 8.8
- CVE-2021-26085: Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerabilitycriticalexploited in the wildCVSS 5.3
- CVE-2026-21579: Atlassian Confluence Data Center information disclosureinfoCVSS 8.2
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 2 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 2 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/confluence-data-center.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Atlassian Confluence Data Center vulnerabilities", https://junglewise.ai/threats/technologies/confluence-data-center, 26 September 2026.