Atlassian Product Security Updates (October 2026)
Atlassian has released security updates addressing multiple vulnerabilities across its Data Center and Server product portfolio, including Bamboo, Bitbucket, Confluence, Crowd, Fisheye/Crucible, Jira, and Jira Service Management.
Triage facts
Revision 1- Applicability
- Bamboo Data Center and Server (<= 12.1.12, <= 10.2.24), Bitbucket Data Center and Server (<= 10.2.8, <= 10.5.1, <= 9.4.26) +5
- Evidence
- Unknown
- Severity
- High
- Action
- Elevated
- Sources
- 3 public sources
- Freshness
- Revision 1Oct 22, 19:59 UTC
- Source quality
- A1Likely
On October 20, 2026, Atlassian issued a security bulletin addressing multiple vulnerabilities affecting a wide range of its enterprise products. The impacted software includes Bamboo, Bitbucket, Confluence, Crowd, Fisheye/Crucible, Jira, and Jira Service Management. The specific CVE identifiers and technical details for these vulnerabilities are available in the official Atlassian security bulletin linked below. Organizations are advised to audit their environments against the affected versions and prioritize patching to mitigate potential security risks.
Recommendation
- Inventory all internal instances of Atlassian Data Center and Server products.
- Review the Atlassian Security Bulletin - October 20 2026 for specific CVEs and fixed versions applicable to your environment.
- Apply the necessary security updates to the identified products immediately.
Mitigations
Apply security updates as specified in the October 20 2026 Atlassian Security Bulletin
All listed Atlassian products