CVE-2026-93909

9.1Critical

Published 13 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash

9.1Critical

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Impact: High impact on confidentiality, integrity
Weakness: CWE-384

Impact

Unauthenticated remote attackers can bypass authentication and gain unauthorized access to applications. They only need network access to an instance running the samlWeb-2.0 feature.

Root cause

Improper session handling (session fixation) in the samlWeb-2.0 feature allows authentication bypass.

Affected systems

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 with samlWeb-2.0 enabled

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Fix & remediation

Upgrade to a fixed release newer than 26.0.0.10 per the IBM advisory. If unable to patch immediately, disable the samlWeb-2.0 feature in server.xml.

shell

$ grep -rn 'samlWeb-2.0' /opt/ibm/wlp/usr/servers/*/server.xml

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD 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.

References

https://www.ibm.com/support/pages/node/7292236

Source: nvd.nist.gov/vuln/detail/CVE-2026-93909