CVE-2026-11541 Inconsistent Interpretation of HTTP Requests in CICS Transaction Gateway for Multiplatforms.
Attackers can exploit HTTP request smuggling in IBM CICS Transaction Gateway and WebSphere to bypass security controls or access sensitive data.
- 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-2026-11541?
CVE-2026-11541 is a high-severity vulnerability in Ibm Websphere Application Server, published on 30 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM CICS Transaction Gateway for Multiplatforms 9.1, 9.2, 9.3, and 10.1 IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are affected by an HTTP request smuggling vulnerability.
Weakness: CWE-444
Which versions are affected by CVE-2026-11541?
It affects 1 product.
Products include Ibm Websphere Application Server.
How do I fix CVE-2026-11541?
No fix has been published for CVE-2026-11541 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-11541 being exploited?
There is no known exploitation of CVE-2026-11541 in the wild and no public exploit code.
Other vulnerabilities in Ibm Websphere Application Server
Sources
Also known as GHSA-974x-wv37-rccw.