Description
This High severity Improper Authorization vulnerability was introduced in versions 7.4.0, 7.13.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center.
This Improper Authorization vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to gain unintended access and can lead to the exposure of resources or functionality, possibly providing attackers with sensitive information or even execute arbitrary code.
Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.24
Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.17
See 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]).
This vulnerability was reported via our Penetration Testing program.
This Improper Authorization vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to gain unintended access and can lead to the exposure of resources or functionality, possibly providing attackers with sensitive information or even execute arbitrary code.
Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.24
Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.17
See 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]).
This vulnerability was reported via our Penetration Testing program.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlassian | Confluence Data Center | affected |
|
No data.
No data.
| Vendor | Product | Confidence | Versions | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atlassian | Confluence Data Center | 95% |
|
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Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
No advisories yet.
References
History
Tue, 15 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-285 |
Tue, 15 Sep 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 15 Sep 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | This High severity Improper Authorization vulnerability was introduced in versions 7.4.0, 7.13.0, 8.5.0, 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0 of Confluence Data Center. This Improper Authorization vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to gain unintended access and can lead to the exposure of resources or functionality, possibly providing attackers with sensitive information or even execute arbitrary code. Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.24 Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.17 See 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]). This vulnerability was reported via our Penetration Testing program. | |
| First Time appeared |
Atlassian
Atlassian confluence Data Center |
|
| CPEs | cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.22:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.23:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.24:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.25:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.26:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.27:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.28:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.29:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.30:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:8.5.31:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.1.1:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.10:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.11:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.12:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.13:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.14:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.15:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.16:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.17:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.18:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.19:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.20:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.21:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.22:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.23:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.24:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.25:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.2:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.3:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.4:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.5:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.6:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.7:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.8:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.2.9:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:9.4.1:*:*:*:*:*:*:* |
|
| Vendors & Products |
Atlassian
Atlassian confluence Data Center |
|
| References |
| |
| Metrics |
cvssV4_0
|
MITRE
Status: PUBLISHED
Assigner: atlassian
Published:
Updated: 2026-09-15T20:22:13.651Z
Reserved: 2026-01-01T00:00:40.722Z
Link: CVE-2026-21586
Vulnrichment
Updated: 2026-09-15T17:26:22.700Z
NVD
Status : Received
Published: 2026-09-15T17:17:11.580
Modified: 2026-09-15T21:16:36.577
Link: CVE-2026-21586
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-09-15T19:00:13Z
Weaknesses