CVE-2026-84717

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-23. the CNA's CVSS baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, ghsa
Trending — Patch released this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 5.3Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the Ansible Automation Platform automation-controller. The unauthenticated Bitbucket Data Center webhook receiver skips HMAC signature verification for diagnostics:ping events after it has already looked up the target template, causing the endpoint to return HTTP 200 for a template that has a Bitbucket DC webhook configured and HTTP 403 otherwise. An unauthenticated remote attacker can use this response discrepancy as an oracle to enumerate which Job Template and Workflow Job Template IDs have Bitbucket DC webhooks configured, without knowing the secret webhook_key.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 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

2527210 – (CVE-2026-84717) CVE-2026-84717 automation-controller: automation-controller: unauthenticated 200-vs-403 oracle in Bitbucket Data Center webhook receiver enumerates webhook-enabled job templates

https://bugzilla.redhat.com/show_bug.cgi?id=2527210
redhat Patch Available

CVE-2026-84717 - 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-2026-84717

Vendor Advisories for CVE-2026-84717(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 10× in last 7d / 10× 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 03:52 UTCEG score recompute
  2. 2026-09-24 03:52 UTCVendor advisory
  3. 2026-09-24 03:52 UTCGHSA enrichment
  4. 2026-09-23 23:24 UTCEG score recompute
  5. 2026-09-23 23:24 UTCGHSA enrichment
  6. 2026-09-23 22:23 UTCEG score recompute
  7. 2026-09-23 22:23 UTCGHSA enrichment
  8. 2026-09-23 20:22 UTCEG score recompute
  9. 2026-09-23 19:48 UTCEG score recompute
  10. 2026-09-23 19:48 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(4)

What is CVE-2026-84717?
CVE-2026-84717 is a medium vulnerability published on September 23, 2026. A flaw was found in the Ansible Automation Platform automation-controller. The unauthenticated Bitbucket Data Center webhook receiver skips HMAC signature verification for diagnostics:ping events after it has already looked up the target template, causing the endpoint to return HTTP 200 for a…
When was CVE-2026-84717 disclosed?
CVE-2026-84717 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-2026-84717?
CVE-2026-84717 has a CVSS v4.0 base score of 5.3 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-84717?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84717, 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

Explore the affected products and dependency analysis for CVE-2026-84717

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