Vulnerabilities · InfosecFeed Brief

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

Vulnerabilities

What you need to 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. [...]

Source transparency

This is an InfosecFeed curated brief based on reporting from BleepingComputer. InfosecFeed does not claim ownership of the original reporting.

Read the original report at BleepingComputer ↗