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CVE-2026-18148 is an improper output neutralization for logs vulnerability in IBM i Navigator for i affecting IBM i versions 7.3, 7.4, 7.5, and 7.6. The flaw allows a remote authenticated attacker to inject arbitrary content into Navigator log files. The issue stems from insufficient neutralization of untrusted input before it is written to logs, enabling attacker-controlled data to be recorded as forged or misleading log entries. This can undermine the reliability of operational and security logging within Navigator for i.
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What an attacker gets, and what they’ve been doing with it.
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Cross-references every affected SKU, including bundled OEM variants.
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