High severity · published Sep 23, 2026
CVE-2026-84683
Automation-controller: automation-controller-container: automation-controller: stored cross-site scripting in the job stdout html view via ansi osc 8 hyperlink sequences (javascript: anchor) enabling session takeover
8.7
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Ansible Automation Platform 2.5 for RHEL 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Ansible Automation Platform 2.5 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Ansible Automation Platform 2.6 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Ansible Automation Platform 2.6 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Ansible Automation Platform 2.7 · Red Hat
All versions, or not specified · source: vendor
Affected product
RH
Red Hat Ansible Automation Platform 2.5 for RHEL 8
Red Hat
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