CVE-2026-21589

CVE-2026-21589 Exploited in the Wild as Atlassian File Read Flaw Details and PoC Go Public

Do Son October 7, 2026

TL;DR Attackers have begun CVE-2026-21589 exploitation against self-managed Atlassian servers. Researchers at watchTowr published a full technical...

Critical Atlassian Flaw CVE-2026-21589 Exposes Files in Jira, Confluence, Bitbucket and Five More Products Atlassian Data Center vulnerability CVE-2026-21589 arbitrary file access in Jira, Confluence, Bitbucket, Bamboo, Crowd, Fisheye and Crucible

Atlassian Data Center vulnerability CVE-2026-21589 arbitrary file access in Jira, Confluence, Bitbucket, Bamboo, Crowd, Fisheye and Crucible

Critical Atlassian Flaw CVE-2026-21589 Exposes Files in Jira, Confluence, Bitbucket and Five More Products

Do Son October 6, 2026

TL;DR Atlassian has patched CVE-2026-21589, a critical Atlassian Data Center vulnerability with a CVSS score of 9.3....

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