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CriticalVulnerabilityCVE-2026-91490updated 25 Oct 2026, 18:50 UTC

Oracle Identity Manager Connector LDAP Gateway flaw lets outsiders read and change data

Attackers on the network can talk to a part of this product over LDAP, a common directory protocol, without logging in. They could read, change, or delete data the connector can access.

Official, 2 sources
SeverityCriticalCVSS 9.1 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. 1Remote attackerNo login or credentials needed
  2. 2LDAP requestSent over the network to the gateway
  3. 3LDAP GatewayFlawed component accepts the request
  4. 4Connector dataRead, modified, or deleted
  5. ResultAttacker gains critical data access

What happened

A critical flaw in the LDAP Gateway component of Oracle Identity Manager Connector (Oracle Fusion Middleware) allows unauthenticated network attackers to compromise the connector, with high confidentiality and integrity impact.

Why it is dangerous: Successful attacks can expose or modify all data accessible to the connector, including identity and directory records. Organizations exposing this LDAP Gateway to a network are at highest risk.

Are you affected?

You are affected if you run Oracle Identity Manager Connector 12.2.1.4.0 or 14.1.2.1.0 with the LDAP Gateway component reachable over the network.

Oracle Identity Manager Connector 12.2.1.4.0; Oracle Identity Manager Connector 14.1.2.1.0

What to do

  1. Check whether Oracle Identity Manager Connector 12.2.1.4.0 or 14.1.2.1.0 is in use, especially the LDAP Gateway component
  2. Restrict network access to the LDAP Gateway so only trusted hosts can reach it
  3. Apply the official Oracle Critical Patch Update or security fix for CVE-2026-91490 as soon as it is available for your version

Timeline

  1. 20 Oct 2026, 22:20 UTC
    Publicly disclosed
  2. 20 Oct 2026, 22:20 UTC
    Reported by NVD · NVD
  3. 25 Oct 2026, 18:50 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-91490 · GHSA-w5j9-8hf8-rh6m
CVSS
9.1 / 10
EPSS
0.4% chance of exploitation within 30 days
Disclosed
20 Oct 2026, 22:20 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 18:50 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 Identity Manager Connector LDAP Gateway flaw lets outsiders read and change data · Zero Radar