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Weakness (CWE)

CWE-42: Path Equivalence: 'filename.' (Trailing Dot)

Variant Incomplete

The product accepts path input in the form of trailing dot ('filedir.') without appropriate validation, which can lead to ambiguous path resolution and allow an attacker to traverse the file system to unintended locations or access arbitrary files.

Source: MITRE CWE-42

All Critical High Medium Low Exploited only Public exploit

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  • High 7.8
    CVE-2026-52884

    Notepad++: CVE-2026-48800 Bypass

    Notepad++ is a free and open-source source code editor. In v8.9.6.1, isInTrustedDirectory() does NOT canonicalize the path before checking. It uses a prefix-based check (PathIsPrefix() or equivalent) that matches paths starting with trusted directory strings.…

    notepad-plus-plus notepad-plus-plus