CTI · reviewed · 2026-10-06

Atlassian Bamboo CVE-2026-21589 critical path traversal (CVSS 9.3)

Full story & timeline

MITRE ATT&CK

• T1190 Exploit Public-Facing Application Initial Access
• T1083 File and Directory Discovery Discovery

Indicators

Observables tied to this case, from the curated feed. raw sidecar

• cybersecurefox.com domain · active · corroborated

Detections

No detection content yet — case analysis did not yield signal-specific telemetry. Check back after the next daily CTI pass.

References

• https://confluence.atlassian.com/security/cve-2026-21589-arbitrary-file-access-vulnerability-impacts-multiple-products-1870495748.html
• https://thehackernews.com/2026/10/critical-atlassian-flaw-lets.html
• https://gbhackers.com/atlassian-cve-2026-21589-flaw/