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CriticalVulnerabilityCVE-2026-91495updated 25 Oct 2026, 18:50 UTC

Oracle WebCenter Content can be fully taken over over the network without a login

Attackers who can reach the product over the network can take control of it without any password. That means they could read, change, or delete the documents it stores and shut it down.

Official, 2 sources
SeverityCriticalCVSS 9.8 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

What happened

Oracle WebCenter Content Server, part of Oracle Fusion Middleware, has a flaw that lets an unauthenticated attacker send HTTP requests and fully compromise the product.

Why it is dangerous: A successful attack gives the attacker control over the content management system, affecting confidentiality, integrity, and availability. Organizations running this document management server on a reachable network are at risk.

Are you affected?

You are affected if you run Oracle WebCenter Content Server 12.2.1.4.0 or 14.1.2.0.0 and it is reachable over the network via HTTP.

Oracle WebCenter Content (Content Server component): 12.2.1.4.0, 14.1.2.0.0

What to do

  1. Check whether Oracle WebCenter Content Server 12.2.1.4.0 or 14.1.2.0.0 is in use
  2. Apply the official Oracle Critical Patch Update or security fix for this CVE as soon as it is available
  3. Restrict HTTP access to the Content Server to trusted networks until patched

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-2026-91495 · GHSA-p9cr-vwph-w89h
CVSS
9.8 / 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 WebCenter Content can be fully taken over over the network without a login · Zero Radar