What is CVE-2026-11710?

CVE-2026-11710 is a medium-severity vulnerability in IBM Websphere Application Server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 6.5/10. Published 2026-09-18.

How severe is CVE-2026-11710?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in IBM Websphere Application Server

CVE-2026-11710

IBM WebSphere Application Server 8.5 is affected by an HTTP request smuggling vulnerability due to improper handling of Content-Length headers.

Vulnerability class: HTTP Request Smuggling

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Ibm Websphere Application Server — versions 8.5

Weakness classification (CWE)

CWE-444 — Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling)

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-11710?: CVE-2026-11710 is a medium-severity vulnerability in IBM Websphere Application Server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 6.5/10. Published 2026-09-18.
How severe is CVE-2026-11710?: Medium severity. CVSS v3 base score is 6.5 out of 10.