# CVE-2023-3971: Controller: html injection in custom login info

Status: published. Published: 2023-10-04. Updated: 2026-11-07.

An HTML injection flaw was found in Controller in the user interface settings. This flaw allows an attacker to capture credentials by creating a custom login page by injecting HTML, resulting in a complete compromise.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Red Hat / Red Hat Ansible Automation Platform 2.3 for RHEL 8 (automation-controller): ≥ 0:4.3.11-1.el8ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.3 for RHEL 9 (automation-controller): ≥ 0:4.3.11-1.el9ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.4 for RHEL 8 (automation-controller): ≥ 0:4.4.1-1.el8ap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Ansible Automation Platform 2.4 for RHEL 9 (automation-controller): ≥ 0:4.4.1-1.el9ap; < * (unaffected, rpm). Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 7.3 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.82% as of 2026-11-06; percentile 57.26%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-80

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2023:4340 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:4590 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2023-3971 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2226965 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2023:4340 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/errata/RHSA-2023:4590 (ADP: CVE; vendor-advisory, x_refsource_REDHAT, x_transferred)

- https://access.redhat.com/security/cve/CVE-2023-3971 (ADP: CVE; vdb-entry, x_refsource_REDHAT, x_transferred)

- https://bugzilla.redhat.com/show_bug.cgi?id=2226965 (ADP: CVE; issue-tracking, x_refsource_REDHAT, x_transferred)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2023-3971; retrieved 2026-11-07; source updated 2026-11-07

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2023-3971; retrieved 2026-11-07; source updated Not reported

Revision: 4a689e404fbd02aa69dcebfdfbdec71fdf994a452f9b9480c4951840b649ec00

Canonical: https://y2.dev/cve/CVE-2023-3971

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