Vulnerability · Published Sep 18, 2026 · Assigned by ibm
CVE-2026-11722IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty HTTP Request Smuggling
Medium 4.8
In plain English
A medium-severity security flaw in WebSphere Application Server from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).
Severity (CVSS 3.1)4.8Medium
Exploit odds (30 days)0.3%top 83.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM WebSphere Application Server 8.5 and 9.0, and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.8 are affected by an HTTP request smuggling vulnerability.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | WebSphere Application Server | 9.08.5 |
| IBM | WebSphere Application Server - Liberty | 17.0.0.3 – through 26.0.0.5 |
Weakness: CWE-444 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
References
- https://www.ibm.com/support/pages/node/7286610 vendor-advisory, patch
- https://www.ibm.com/support/pages/node/7286611 vendor-advisory, patch