CVE-2026-21570
Last modified
CVE-2026-21570 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. This High severity RCE (Remote Code Execution) vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 8.6, allows an authenticated attacker to execute malicious code on the remote system. 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 9.6: Upgrade to a release greater than or equal to 9.6.24 Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.16 Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.3 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 Atlassian (Internal) program.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.
Description
This High severity RCE (Remote Code Execution) vulnerability was introduced in versions 9.6.0, 10.0.0, 10.1.0, 10.2.0, 11.0.0, 11.1.0, 12.0.0, and 12.1.0 of Bamboo Data Center. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 8.6, allows an authenticated attacker to execute malicious code on the remote system. 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 9.6: Upgrade to a release greater than or equal to 9.6.24 Bamboo Data Center 10.2: Upgrade to a release greater than or equal to 10.2.16 Bamboo Data Center 12.1: Upgrade to a release greater than or equal to 12.1.3 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 Atlassian (Internal) program.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Atlassian | Bamboo | >= 9.6.1, < 9.6.24 |
| Atlassian | Bamboo | >= 10.0.0, < 10.2.16 |
| Atlassian | Bamboo | >= 11.0.0, < 12.1.3 |
References
- https://jira.atlassian.com/browse/BAM-26342Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-21570?
How severe is CVE-2026-21570?
How do I fix CVE-2026-21570?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-21553In modem, there is a possible improper input validation. Thi…7.5
- CVE-2026-21554In modem, there is a possible improper input validation. Thi…7.5
- CVE-2026-21555In modem, there is a possible improper input validation. Thi…7.5
- CVE-2026-2156A weakness has been identified in code-projects Online Stude…4.8
- CVE-2026-21569This High severity XXE (XML External Entity Injection) vulne…7.9
- CVE-2026-2157A security vulnerability has been detected in D-Link DIR-823…7.3
- CVE-2026-21571This Critical severity OS Command Injection vulnerability wa…8.8
- CVE-2026-21575This High severity RCE (Remote Code Execution) vulnerability…8
- CVE-2026-21577This High severity DoS (Denial of Service) vulnerability was…6.5
- CVE-2026-21579This High severity Information Disclosure vulnerability was …7.5
- CVE-2026-2158A vulnerability was detected in code-projects Student Web Po…9.8
- CVE-2026-2159A flaw has been found in SourceCodester Simple Responsive To…6.1
Are you affected by CVE-2026-21570?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST