CVE-2026-84691

HIGHPre-NVD 8.78.7—
EchelonGraph scoreHIGH confidence

Score 8.7 from GitHub Security Advisory (severity: HIGH) published 2026-09-23. the CNA's CVSS baseline 8.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, ghsa
Trending — Patch released this week
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 8.7Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in Red Hat Ansible Automation Platform's automation- controller. The setting that formats the log message emitted for API 4XX errors is an administrator-controlled Python format-string template that is rendered with a live user object as an argument. Because Python string formatting permits attribute and item traversal on its arguments, an administrator can craft a template that walks from the user object into the application settings and reads the Django secret key and the database password. The formatted message is written to a logger that can be forwarded to an external log aggregator, whose destination is also administrator-controlled, allowing the secrets to be sent off the host. An authenticated administrator can thereby obtain the master encryption key used to protect all stored credentials and the database service password, enabling offline decryption of every stored credential, forgery of user sessions, and direct access to the controller database.

CVSS v3
8.7
EG Score
8.7(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity87% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

September 23, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Sep 23, 2026
Patch available. Sources: redhat.
redhat

2527151 – (CVE-2026-84691) CVE-2026-84691 automation-controller: automation-controller-container: automation-controller: format string injection in the API 4XX error log setting discloses Django SECRET_KEY and database credentials to an administrator

https://bugzilla.redhat.com/show_bug.cgi?id=2527151
redhat Patch Available

CVE-2026-84691 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-84691

Vendor Advisories for CVE-2026-84691(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatautomation-controller-0:4.7.17-1.el9ap2026-09-23redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 13× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 04:02 UTCVendor advisory
  2. 2026-09-24 04:02 UTCGHSA enrichment
  3. 2026-09-24 03:50 UTCEG score recompute
  4. 2026-09-24 03:50 UTCVendor advisory
  5. 2026-09-24 03:50 UTCGHSA enrichment
  6. 2026-09-23 22:23 UTCEG score recompute
  7. 2026-09-23 22:23 UTCGHSA enrichment
  8. 2026-09-23 21:53 UTCEG score recompute
  9. 2026-09-23 21:53 UTCGHSA enrichment
  10. 2026-09-23 20:22 UTCEG score recompute
  11. 2026-09-23 19:39 UTCEG score recompute
  12. 2026-09-23 19:19 UTCEG score recompute
  13. 2026-09-23 19:19 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(4)

What is CVE-2026-84691?
CVE-2026-84691 is a high vulnerability published on September 23, 2026. A flaw was found in Red Hat Ansible Automation Platform's automation- controller. The setting that formats the log message emitted for API 4XX errors is an administrator-controlled Python format-string template that is rendered with a live user object as an argument. Because Python string…
When was CVE-2026-84691 disclosed?
CVE-2026-84691 was first published in the National Vulnerability Database on September 23, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-84691?
CVE-2026-84691 has a CVSS v4.0 base score of 8.7 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-84691?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84691, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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