Friday’s brief: Atlassian on CISA’s clock, then Juniper, Adobe Commerce and a Linux VM escape

By George Bailey   Published: 10/16/26   2 min read

Good morning. CISA confirmed attacks on the Atlassian file-read bug we have covered since October 7, and gave self-hosted Jira and Confluence a Sunday deadline. Juniper shipped a large set of Junos fixes, Adobe Commerce has a no-login bug rated 10.0, and a Linux kernel flaw lets a VM read its host’s memory. Here is the order we would take them.

Lead Story

CISA confirms attacks on the Atlassian file-read bug in self-hosted Jira and Confluence. Federal deadline is Sunday, October 18. Get the fixed builds →

Also Worth Your Attention

Juniper fixed dozens of critical Junos router and firewall bugs, two of them through J-Web with no login. Close J-Web first →

Adobe Commerce and Magento stores have a no-login bug rated 10.0 to patch. Store patch list →

A Linux kernel bug lets a guest VM read host memory, and a lab chain reached a full host escape. Host kernel versions →

Also on the radar: EG Secure Solutions warns that a command injection bug in SiteGuard Server Edition, a web application firewall used mostly in Japan, is being exploited, and Meta is notifying about 1,500 people after attackers used a stolen employee login to get into some of its GitHub repositories (The Hacker News).

Source: CISA KEV alert, October 15; Atlassian; Juniper JSA112187; Adobe APSB26-153; pwn.ai

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George Bailey

George Bailey is the byline of the CyberExperts editorial desk, the team behind the CyberExperts Daily Brief. The desk covers vulnerabilities, breaches and security news from vendor advisories, CISA alerts and other primary sources, and links those sources in every story. Questions or corrections: [email protected].