Vulnerability · Published Jul 28, 2026 · Assigned by ibm
CVE-2026-15064IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities
High 8.7
In plain English
A high-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 28% of all known vulnerabilities).
Severity (CVSS 3.1)8.7High
Exploit odds (30 days)0.3%top 72.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM WebSphere Application Server and IBM WebSphere Application Server - Liberty is vulnerable to HTTP Response Smuggling due to improper handling of non-standard HTTP version tokens.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | WebSphere Application Server | 9.08.5 |
| IBM | WebSphere Application Server - Liberty | 17.0.0.3 – through 26.0.0.7 |
Weakness: CWE-444 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
References
- https://www.ibm.com/support/pages/node/7281625 vendor-advisory, patch