bitbucket server vulnerabilities and fixes

Recent CVEs affecting bitbucket server, with upgrade or downgrade steps. 1 tracked.

Also searched as: bitbucketserver.

bitbucket server has 1 tracked vulnerability, 0 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 1. Most recent: 2026-10-05. 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

FAQ

How do I fix bitbucket server 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 server being exploited right now?

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

Which bitbucket server CVE should I patch first?

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

← Back to latest CVEs