Vulnerability · Published Jun 1, 2026 · Assigned by ibm
CVE-2026-8644IBM WebSphere Application Server is affected by an identity spoofing vulnerability
Critical 9.1
In plain English
A critical-severity authentication bypass by spoofing 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 26% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.3%top 73.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to identity spoofing.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | WebSphere Application Server | 9.0 – through 1.1.9.128.5 |
Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
References
- https://www.ibm.com/support/pages/node/7274740 vendor-advisory, patch