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Jira Software Data Center (< 9.12.40, 10.3.26, 11.3.12)

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critical threat

Critical Path Traversal in Atlassian Data Center Products (CVE-2026-21589)

An unauthenticated arbitrary file read vulnerability (CVE-2026-21589) in multiple Atlassian Data Center products allows attackers to access sensitive configuration files via a path traversal flaw in the webresource router.

exploited Bitbucket Data Center +15 vulnerability web-application path-traversal
1r 3t 1c updated