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CVE-2026-84683

📛 CVE Title

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

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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.

Overview

State
PUBLISHED
Assigner (CNA)
redhat
CVSS severity
HIGH
CVSS score
CVSS 8.7 / 10 8.7 8.7 / 10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Effective score
8.7 / 10 HIGH source: CNA overview
CWE(s)
CWE-79
Reserved
2026-09-01
Published
2026-09-23 19:02 UTC
Last updated
2026-09-24 03:34 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/84xxx/CVE-2026-84683.json
Linked Threat
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

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published
2026-09-23 20:17:17 UTC
NVD last modified
2026-09-24 04:18:00 UTC
NVD CVSS v3.1
CVSS 8.7 / 10 8.7 8.7 / 10 HIGH source: secalert@redhat.com
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Exploitability subscore
2.3 / 10
Impact subscore
5.8 / 10

NVD / KEV / EPSS data refreshed 2026-09-24 04:34 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

Affected products (5)
VendorProductVersionsPlatforms
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8 0:4.6.33-1.el8ap (unaffected) —
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 9 0:4.6.33-1.el9ap (unaffected) —
Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9 0:4.7.17-1.el9ap (unaffected) —
Red Hat Red Hat Ansible Automation Platform 2 — —
Red Hat Red Hat Ansible Automation Platform 2 — —

Vendor references (4)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (4)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-84683.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:ansible_automation_platform:2.5::el8",
            "cpe:/a:redhat:ansible_automation_platform:2.5::el9",
            "cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8",
            "cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9",
            "cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8",
            "cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "automation-controller",
          "product": "Red Hat Ansible Automation Platform 2.5 for RHEL 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.6.33-1.el8ap",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:ansible_automation_platform:2.5::el8",
            "cpe:/a:redhat:ansible_automation_platform:2.5::el9",
            "cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8",
            "cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9",
            "cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8",
            "cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "automation-controller",
          "product": "Red Hat Ansible Automation Platform 2.5 for RHEL 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.6.33-1.el9ap",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:ansible_automation_platform:2.6::el10",
            "cpe:/a:redhat:ansible_automation_platform:2.6::el9",
            "cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10",
            "cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9",
            "cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "automation-controller",
          "product": "Red Hat Ansible Automation Platform 2.6 for RHEL 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.7.17-1.el9ap",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:ansible_automation_platform:2"
          ],
          "defaultStatus": "affected",
          "packageName": "ansible-automation-platform-26/controller-rhel9",
          "product": "Red Hat Ansible Automation Platform 2",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:ansible_automation_platform:2"
          ],
          "defaultStatus": "affected",
          "packageName": "ansible-automation-platform-27/controller-rhel9",
          "product": "Red Hat Ansible Automation Platform 2",
          "vendor": "Red Hat"
        }
      ],
      "datePublic": "2026-09-23T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in Red Hat Ansible Automation Platform's automation-\ncontroller. The HTML view of job, ad hoc command, project update, and inventory\nupdate standard output escapes HTML metacharacters but does not remove ANSI\nterminal escape sequences before conversion to HTML. An ANSI OSC 8 hyperlink\nsequence in the output is expanded into an HTML anchor whose href is not scheme-\nfiltered or escaped, so a low-privileged user who can produce output -- or an\nexternal party whose data a playbook echoes -- can embed a javascript: link that\nis rendered into a text/html response with no Content-Security-Policy. When a\nhigher-privileged user views the output page and clicks the link, attacker-\ncontrolled JavaScript executes in their authenticated session, allowing actions\nas that user up to full platform takeover."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Important"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-24T03:34:00.824Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "RHSA-2026:71113",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:71113"
        },
        {
          "name": "RHSA-2026:71114",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:71114"
        },
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-84683"
        },
        {
          "name": "RHBZ#2527128",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527128"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-01T22:29:39.891Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-09-23T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "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",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-84683",
    "datePublished": "2026-09-23T19:02:18.879Z",
    "dateReserved": "2026-09-01T22:29:34.109Z",
    "dateUpdated": "2026-09-24T03:34:00.824Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}