CVE-2026-84683CWE-79cross-site-scripting

CVE-2026-84683

High · published September 24, 2026

CVSS v3.1
8.7
EPSS
0%
Percentile
16.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00256 · 16.2th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-24T00:17Z
References (6)
EPSS history
Timeline
  • 25 SEP 03:28Z
    EPSS moved — → 0%
    epss
  • 23 SEP 19:02Z
    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
    cvelistv5