CVE-2026-21584This 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.
Updated under an hour ago ()
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It affects Atlassian Bamboo Data Center and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.6 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-285
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- atlassian
- NVD analysis
- Analyzed
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Atlassian Bamboo Data Center atlassian:bamboo_data_center (from the name) | 12.1.0 to 12.1.9; 12.0.0 to 12.0.2; 11.0.0 to 11.0.8; 10.2.0 to 10.2.21; 10.1.0 to 10.1.1; 10.0.0 to 10.0.3; 12.1.10 not affected; 10.2.22 not affected | CNA record |
atlassian bamboo atlassian:bamboo | from 10.0.0 before 10.2.22; from 11.0.0 before 12.1.10 | NVD |
References
- https://confluence.atlassian.com/pages/viewpage.action?pageId=1821999768vendor-advisory
- https://jira.atlassian.com/browse/BAM-26468issue-tracking, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.