CVE-2026-8644 IBM WebSphere Application Server is affected by an identity spoofing vulnerability

Critical 9.1 Published Updated

Attackers can spoof identities in IBM WebSphere Application Server, bypassing authentication controls and potentially gaining unauthorized access.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-8644?

CVE-2026-8644 is a critical authentication bypass vulnerability in Ibm Websphere Application Server, published on 1 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to identity spoofing.

Weakness: CWE-290

Which versions are affected by CVE-2026-8644?

It affects 1 product.

Products include Ibm Websphere Application Server.

How do I fix CVE-2026-8644?

No fix has been published for CVE-2026-8644 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-8644 being exploited?

There is no known exploitation of CVE-2026-8644 in the wild and no public exploit code.

All Ibm Websphere Application Server vulnerabilities

Sources

Also known as GHSA-6xwx-7ghh-j6w4.

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