Vulnerability · Published Aug 5, 2026 · Assigned by ibm
CVE-2026-8400Multiple Vulnerabilities in IBM® Java SDK affect IBM WebSphere Application Server and WebSphere Application Server Liberty due to the July 2026 CPU
High 8.1
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 0.5% (higher than 42% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.5%top 58.3% 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 Continuous delivery has a flaw in the ORB component in IBM SDK, Java Technology Edition, may allow a malicious IIOP server to induce loading and instantation of arbitrary classes.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | WebSphere Application Server | 8.59.0 |
| IBM | WebSphere Application Server - Liberty | Continuous delivery |
Weakness: CWE-470 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.ibm.com/support/pages/node/7282446 vendor-advisory, patch