CVE-2026-85288
Notepad++: Shortcuts.xml macro HMAC bypass still reachable via the "Run a Macro Multiple Times" dialog
CVSS Score
6.7
EPSS Score
0.0%
EPSS Percentile
0th
Notepad++ is a free and open-source source code editor. Prior to 8.9.8, Notepad++ incompletely enforces shortcuts.xml HMAC validation because WM_MACRODLGRUNMACRO, the Run a Macro Multiple Times entry point, calls macroPlayback() without the validation used by command(). A tampered shortcuts.xml macro that is blocked through the Macro menu or a shortcut key can therefore execute through the multi-run dialog and invoke internal Notepad++ commands, including commands that launch external programs, in the current user context. This issue is fixed in version 8.9.8.
| CWE | CWE-78 CWE-345 CWE-693 |
| Vendor | notepad-plus-plus |
| Product | notepad-plus-plus |
| Published | Sep 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
notepad-plus-plus / notepad-plus-plus
< 8.9.8
References
github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-759j-g8j4-867p github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/commit/4cd74cb9347b9c6caaab17d999e24fc9ed228ff7 github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8 notepad-plus-plus.org: https://notepad-plus-plus.org/news/v898-released