CVE-2026-18099 PUBLISHED

IBM i is Affected By Multiple Vulnerabilities in Navigator for i

Assigner: ibm
Reserved: 28.07.2026 Published: 12.08.2026 Updated: 12.08.2026

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary script code due to improper neutralization of user-controlled input.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
CVSS Score: 8.9

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	Required	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	IBM
Product	i
Versions	Version 7.6 is affected Version 7.5 is affected Version 7.4 is affected Version 7.3 is affected

Solutions

IBM strongly recommends addressing the vulnerability now.

IBM i Release5770-SS1 Option 3 PTF Number(s)PTF Download Link(s)7.6SJ10887 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10887 7.5SJ10888 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10888 7.4SJ10890 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10890 7.3SJ10891 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10891

IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.

References

https://www.ibm.com/support/pages/node/7283292

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE