6.5Medium
Ibm Websphere Application Server
CVE-2026-9336
IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted HTTP request to an administrative endpoint. A remote attacker could exploit this vulnerability to cause the server to exhaust filesystem space.
What this means for your business
- It affects Ibm Websphere Application Server. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it from inside the same network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.2% chance of attack attempts being seen in the next 30 days, ranking above 12% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Ibm Websphere Application Server, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
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Scoring
- CVSS
- 6.5 (v3.1)
- Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-306
- Assigned by
- psirt@us.ibm.com
Dates
- Published
- 2026-09-10
- Last modified
- 2026-09-16
- Sources
- NVD
Affected products
- Ibm Websphere Application Server8.5.0.0 - 8.5.5.31, 9.0.0.0 - 9.0.5.29
As listed in the NVD configuration data. Not a statement about your estate.