Mmastodon TechnologyCybersecurity first seen 11 h ago, last 11 h ago, peak #7
Critical path traversal flaw hits Atlassian Bamboo Data Center
Original: CVE-2026-21589 (CRITICAL, CVSS 9.3) in Atlassian Bamboo Data Center https:// radar.offseq.com/threat/cve-20 26-21589-pat
A new vulnerability, CVE-2026-21589, has been assigned a critical CVSS score of 9.3 in Atlassian Bamboo Data Center. The flaw is described as a path traversal issue allowing arbitrary read and write access on affected systems. Security teams running Bamboo deployments are being urged to review the advisory and patch promptly, as unpatched instances could allow attackers to read or modify files on the server.
Why now: A newly disclosed critical vulnerability with a 9.3 CVSS score is being flagged for organisations running Atlassian Bamboo Data Center.
AtlassianBamboo Data CenterCVE-2026-21589
Evidence
- CVE-2026-21589 (CRITICAL, CVSS 9.3) in Atlassian Bamboo Data Center https:// radar.offseq.com/threat/cve-20 26-21589-path-traversal-arbitrary-readwrite-in-atlassian-bamboo-data-center-24a2d0e4e6de8f44 # OffSeq # Atlassian # Infosec · offseq@infosec.exchange · 1
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