CVE-2026-101294 IBM WebSphere Application Server - Authentication Bypass

IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10, 8.5, and 9.0 contain a cryptographic signature verification bypass caused by improper verification of cryptographic signatures, letting remote attackers bypass signature verification, exploit requires network access.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.21% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-325

Vendor fix

Update to the latest available version.

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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