CVE-2018-1851

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-10-31 · updated 2026-06-17
Weakness: CWE-502

Description

IBM WebSphere Application Server Liberty OpenID Connect could allow a remote attacker to execute arbitrary code on the system, caused by improper deserialization. By sending a specially-crafted request to the RP service, an attacker could exploit this vulnerability to execute arbitrary code. IBM X-Force ID: 150999.

Affected products

IBM WebSphere Application Server: before 18.0.0.3 — fixed in 18.0.0.3

How to fix

Upgrade to a fixed version: IBM WebSphere Application Server 18.0.0.3. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/105839
https://exchange.xforce.ibmcloud.com/vulnerabilities/150999
https://www.ibm.com/support/docview.wss?uid=ibm10735105
http://www.securityfocus.com/bid/105839
https://exchange.xforce.ibmcloud.com/vulnerabilities/150999
https://www.ibm.com/support/docview.wss?uid=ibm10735105

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