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CriticalVulnerabilityCVE-2026-101809updated 25 Oct 2026, 15:24 UTC

Oracle E-Business Suite Workflow mailer flaw lets outsiders take over the system

Attackers on the internet can send specially crafted web requests and take control of the Workflow notification feature, with no login needed. From there they may reach other connected business software.

Official, 2 sources
SeverityCriticalCVSS 10 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 2 sourcesBacked by an official source

How the attack works simplified

  1. 1Outside attackerNo login or account needed
  2. 2HTTP requestCrafted request sent to the app
  3. 3Workflow mailerFlaw in notification component
  4. 4Workflow takeoverAttacker gains control of Workflow
  5. 5Connected appsScope change reaches other products
  6. ResultAttacker takes over Workflow and beyond

What happened

An unauthenticated network flaw in the Workflow Notification Mailer component of Oracle E-Business Suite allows full compromise of Workflow; the scope change means impact can extend to other products.

Why it is dangerous: A successful attacker can read, change, or disrupt business data and services, and can move into other connected Oracle applications. Organizations that expose E-Business Suite to the internet are most at risk.

Are you affected?

You are affected if you run Oracle E-Business Suite Workflow versions 12.2.3 through 12.2.15 with the Workflow Notification Mailer reachable over HTTP.

Oracle E-Business Suite Workflow (Workflow Notification Mailer), supported versions 12.2.3-12.2.15

What to do

  1. Check whether your Oracle E-Business Suite Workflow version falls within 12.2.3-12.2.15
  2. Restrict network access to the Workflow Notification Mailer until a fix is applied
  3. Install the official Oracle security patch for this issue as soon as it is available
  4. Review logs for unusual unauthenticated HTTP requests to Workflow

Timeline

  1. 20 Oct 2026, 22:18 UTC
    Publicly disclosed
  2. 20 Oct 2026, 22:18 UTC
    Reported by NVD · NVD
  3. 25 Oct 2026, 15:24 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-101809 · GHSA-9vph-6jpf-mwc6
CVSS
10 / 10
EPSS
0.5% chance of exploitation within 30 days
Disclosed
20 Oct 2026, 22:18 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 15:24 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Oracle E-Business Suite Workflow mailer flaw lets outsiders take over the system · Zero Radar