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10 days ago

Atlassian warns of critical file-access flaw in Jira, Confluence

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What's happening

SignalsMonitor is following this as a security story. BleepingComputer is the outlet attached so far. The first report grouped here was at 6 Oct 2026, 17:34 UTC. The headline in use is “Atlassian warns of critical file-access flaw in Jira, Confluence”. This note is SignalsMonitor's own briefing, not the publisher's article.

What we know

Atlassian is warning customers of a critical vulnerability, tracked as CVE-2026-21589, that can be exploited for arbitrary file-access in multiple self-hosted Data Center products, including Confluence, Jira, and Bitbucket. [...

BleepingComputerRead at BleepingComputer

Story timeline

Reports grouped into this story, earliest first. Exact repeats from the same outlet are collapsed.

Reported by 1 outlet

  • BleepingComputer