Bitbucket vulnerabilities and fixes

CVEs that mention Bitbucket, ranked by priority. 3 tracked.

Bitbucket has 3 tracked vulnerabilities, 0 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 3. Most recent: 2026-10-06. Highest priority: CVE-2026-21589 (score 88/100).

• CVE-2026-21589 HIGH 7.5 EXPLOITED UPGRADE UPGRADE Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability
• CVE-2026-106486 HIGH 8.5 UPGRADE UPGRADE Backstage is an open framework for building developer portals
• CVE-2026-106462 MEDIUM 6.4 UPGRADE UPGRADE Backstage is an open framework for building developer portals

FAQ

How do I fix Bitbucket vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is Bitbucket being exploited right now?

Yes: 1 Bitbucket CVE is on the CISA Known Exploited Vulnerabilities list, so patch it first.

Which Bitbucket CVE should I patch first?

CVE-2026-21589 currently ranks highest (88/100): Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability.

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