Technology · Atlassian
Atlassian Confluence Data Center vulnerabilities
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Junglewise Threat Intelligence has tracked 14 vulnerabilities in Atlassian Confluence Data Center: 0 in the last 7 days and 3 in the last 90 days, 10 of them critical and 10 exploited in the wild. The most recent, CVE-2026-21589, was published on 5 October 2026. Nothing in the last four weeks, down from 3 vulnerabilities in the four before. 0 critical against 1, 0 exploited in the wild against 1.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 10
- Exploited in the wild
- 10
About Atlassian Confluence Data Center
Distributed content collaboration platform designed for enterprise teams to create, share and manage documentation.
Latest Atlassian Confluence Data Center vulnerabilities
- CVE-2026-21589: Atlassian Data Center arbitrary file access without authenticationcriticalexploited in the wildEPSS 2.8%
- 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-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
- CVE-2021-26085: Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerabilitycriticalexploited in the wildCVSS 5.3
- CVE-2026-21589: Atlassian Data Center arbitrary file access without authenticationcriticalexploited in the wildEPSS 2.8%
Vulnerabilities per week
Nothing in the last four weeks, down from 3 vulnerabilities in the four before. 0 critical against 1, 0 exploited in the wild against 1. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 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 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 1 | 1 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Atlassian Confluence Data Center vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/confluence-data-center)<a href="https://junglewise.ai/threats/technologies/confluence-data-center"><img src="https://junglewise.ai/threats/technologies/confluence-data-center/badge.svg" alt="Atlassian Confluence Data Center vulnerabilities" /></a>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, and this page as text at https://junglewise.ai/threats/technologies/confluence-data-center.md, 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, 9 November 2026.