XSS in Red Hat Ansible Automation Platform 2
CVE-2026-84683
A flaw was found in Red Hat Ansible Automation Platform's automation- controller. The HTML view of job, ad hoc command, project update, and inventory update standard output escapes HTML metacharacters but does not remove ANSI terminal escape sequences before conversion to HTML. An ANSI OSC 8 hyperlink sequence in the output is expanded into an HTML anchor whose href is not scheme- filtered or escaped, so a low-privileged user who can produce output -- or an external party whose data a playbook echoes -- can embed a javascript: link that is rendered into a text/html response with no Content-Security-Policy. When a higher-privileged user views the output page and clicks the link, attacker- controlled JavaScript executes in their authenticated session, allowing actions as that user up to full platform takeover.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-84683 (vdb-entry)
- RHBZ#2527128 (issue-tracking)
- RHSA-2026:71113 (vendor-advisory)
- RHSA-2026:71114 (vendor-advisory)
- RHSA-2026:71177 (vendor-advisory)
- RHSA-2026:71179 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-84683?
- CVE-2026-84683 is a high-severity vulnerability in Red Hat Ansible Automation Platform 2, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-09-23.
- How severe is CVE-2026-84683?
- High severity. CVSS v3 base score is 8.7 out of 10.