Vulnerability · Published Oct 13, 2026 · Assigned by ibm
CVE-2026-93909IBM WebSphere Application Server Liberty is affected by an authentication bypass
Critical 9.1
In plain English
A critical-severity session fixation in WebSphere Application Server - Liberty 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 27% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.3%top 72.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 is vulnerable by an authentication bypass vulnerability when samlWeb-2.0 feature is enabled.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | WebSphere Application Server - Liberty | 17.0.0.3 – through 26.0.0.10 |
Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://www.ibm.com/support/pages/node/7292236 vendor-advisory, patch