CVE-2023-46158: IBM WebSphere Application Server session fixation

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-25 · updated 2026-06-17
Weakness: CWE-613

Description

IBM WebSphere Application Server Liberty 23.0.0.9 through 23.0.0.10 could provide weaker than expected security due to improper resource expiration handling. IBM X-Force ID: 268775.

Affected products

IBM Websphere Application Server Liberty: from 23.0.0.9 before 23.0.0.11 — fixed in 23.0.0.11

How to fix

Upgrade to a fixed version: IBM Websphere Application Server Liberty 23.0.0.11. Check the vendor advisory for mitigations.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/268775
https://www.ibm.com/support/pages/node/7058356
https://exchange.xforce.ibmcloud.com/vulnerabilities/268775
https://www.ibm.com/support/pages/node/7058356

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