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Threats Tagged 'cve-2026-105240'

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Threats Tagged 'cve-2026-105240'

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CVE-2026-105240 is a medium severity vulnerability in Apache log4net affecting versions from 1.2.9 up to but not including 3.5.0. It involves improper neutralization of the null byte character in the OutputDebugStringAppender, causing debug output records to be truncated at the null byte. This allows data containing a null byte to hide the remainder of the log message, including exception details and trailing fields. Only Windows applications using OutputDebugStringAppender are affected. The issue is fixed in version 3.5.0.

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