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

CVE-2026-21589 exploitation is underway against Atlassian servers after researchers published arbitrary file read PoC and technical details.

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

Atlassian Data Center vulnerability CVE-2026-21589 (CVSS 9.3) allows arbitrary file access in Jira, Confluence and Bitbucket. Patch now.

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Use after free in XML. Reported by anonymous on 2026-11-06. Google is aware that an exploit for CVE-2026-125350...
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