This Improper Authorization vulnerability, with a CVSS Score of 7.6, 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 Bamboo 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:
* Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.22
* Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.10
See the release notes (https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html). You can download the latest version of Bamboo Data Center from the download center (https://www.atlassian.com/software/bamboo/download-archives).
This vulnerability was reported via our Penetration Testing program.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||
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| Atlassian | Bamboo Data Center | affected |
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OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.
| Vendors | Products |
|---|---|
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Atlassian
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Bamboo Data Center
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No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Wed, 19 Aug 2026 11:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Atlassian
Atlassian bamboo Data Center |
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| Vendors & Products |
Atlassian
Atlassian bamboo Data Center |
Wed, 19 Aug 2026 09:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Improper Authorization Allowing Unintended Access and Potential Code Execution in Atlassian Bamboo Data Center | |
| Weaknesses | CWE-284 |
Tue, 18 Aug 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | This High severity Improper Authorization vulnerability was introduced in versions 10.0.0, 10.1.0, 10.2.0, 11.0.0, 12.0.0, and 12.1.0 of Bamboo Data Center. This Improper Authorization vulnerability, with a CVSS Score of 7.6, 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 Bamboo 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: * Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.22 * Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.10 See the release notes (https://confluence.atlassian.com/bambooreleases/bamboo-release-notes-1189793869.html). You can download the latest version of Bamboo Data Center from the download center (https://www.atlassian.com/software/bamboo/download-archives). This vulnerability was reported via our Penetration Testing program. | |
| References |
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| Metrics |
cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: atlassian
Published:
Updated: 2026-08-18T22:00:00.499Z
Reserved: 2026-01-01T00:00:40.721Z
Link: CVE-2026-21584
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-18T22:16:50.460
Modified: 2026-08-18T22:16:50.460
Link: CVE-2026-21584
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-08-19T11:00:04Z