CVE-2026-48800 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-48800HIGH

notepad-plus-plus notepad-plus-plus — Notepad++: Arbitrary Code Execution via shortcuts.xml UserCommand Injection

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  H  H  H    7.8   .0036   29.3     —

AFFECTED
  Product            Versions     Fixed
  notepad-plus-plus  < 8.9.6.1 –  —

TIMELINE
  May 22  Reserved by GitHub_M
  Jun 26  EXPLOIT PUBLISHED — CVE-2026-48800 (notepad-plus-plus). Public exploit reference added.
  Jun 26  Published (CNA: GitHub_M)

CWE-78 · CNA: GitHub_M · CVSS v3.1 · 2 references · NVD status: Modified

Description

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the <Command> tag text content inside <UserDefinedCommands> in shortcuts.xml is read by NppXml::value(aNode) (Parameters.cpp:3658) in the feedUserCmds() function and stored in UserCommand._cmd without any validation. When the user clicks the corresponding entry in the Run menu, NppCommands.cpp:4264 creates a Command object with string2wstring(ucmd.getCmd()) and calls run(), which invokes ShellExecute (RunDlg.cpp:221) with the attacker-controlled string as the executable path. The injected command appears as a normal menu item in the Run menu, making it a viable persistence mechanism. This vulnerability is fixed in 8.9.6.1.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 22, 2026	Reserved	Reserved by GitHub_M
June 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-48800 (notepad-plus-plus). Public exploit reference added.
June 26, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
notepad-plus-plus	notepad-plus-plus	—	< 8.9.6.1	—

Weaknesses

CWE-78

References (2)

https://github.com/notepad-plus-plus/notepad-plus-plus/commit/6b3dc52a9245c6d8c6287a8d6d93a30981c05feb [Patch]
https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-3x3f-3j39-pj3v [Exploit, Patch, Vendor Advisory]

Authoritative record: CVE-2026-48800 at cve.org

Vendors: notepad-plus-plus

Weaknesses: CWE-78

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-48800 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.