CVE-2026-93909 IBM WebSphere Application Server Liberty - Authentication Bypass

IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10 contains an authentication bypass caused by samlWeb-2.0 feature enabled, letting attackers bypass authentication, exploit requires samlWeb-2.0 feature enabled.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-384

Vendor fix

Update to the latest version beyond 26.0.0.10 or apply vendor patches.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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