SB2026040627 - Multiple vulnerabilities in IBM i
Published: April 6, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Use of hard-coded cryptographic key (CVE-ID: CVE-2025-14923)
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to IBM WebSphere Application Server Liberty could provide weaker than expected security when using the Security Utility when administering security settings. A local user can gain unauthorized access to sensitive information on the system.
2) Cross-site scripting (CVE-ID: CVE-2025-12635)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
3) Prototype pollution (CVE-ID: CVE-2026-29063)
The vulnerability allows a remote attacker to modify object prototype attributes in affected JavaScript objects.
The vulnerability exists due to improper input validation in the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() functions when processing user-supplied input containing __proto__ properties. A remote attacker can send a specially crafted object input to pollute the prototype of base objects, leading to unauthorized property injection and potential privilege escalation.
Prototype pollution occurs without affecting the global Object.prototype, but injected properties can still be accessed through object property lookups even if not visible via Object.keys().
Remediation
Install update from vendor's website.