CVE-2026-16694
Received Received - Intake

Stored XSS in IBM i Web UI

Publication date: 2026-08-12

Last updated on: 2026-08-12

Assigner: IBM Corporation

Description
IBM i 7.6, 7.5, 7.4, and 7.3 is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

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Meta Information

Published
2026-08-12
Last Modified
2026-08-12
Generated
2026-08-12
AI Q&A
2026-08-12
EPSS Evaluated
N/A
NVD
CVE-2026-16694
EUVD
EUVD-2026-57354

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
ibm i 7.6
ibm i 7.5
ibm i 7.4
ibm i 7.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in IBM i's Navigator for i component. An authenticated user can inject arbitrary JavaScript code into the Web UI, which may alter functionality and potentially lead to credential disclosure within a trusted session.

Detection Guidance

Detection involves checking for unauthorized JavaScript code in IBM i's Navigator for i Web UI. Review web application logs for suspicious input patterns or unusual JavaScript execution. Use browser developer tools to inspect DOM elements for injected scripts. Ensure input validation and output encoding are properly implemented in the application.

Impact Analysis

An attacker with access could modify the Web UI behavior, steal user credentials, or perform actions on behalf of the user within a trusted session. This requires the attacker to have valid authentication credentials.

Mitigation Strategies

Apply the recommended PTF from IBM to remediate the vulnerability. Limit user permissions to reduce the risk of exploitation. Monitor Web UI activity for unusual behavior. Ensure all users are authenticated and avoid using shared accounts.

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