RCE in Notepad-plus-plus Notepad\+\+
CVE-2026-48800
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…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.004 (28.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Notepad-plus-plus Notepad\+\+
- Notepad-plus-plus — versions < 8.9.6.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-48800?
- CVE-2026-48800 is a high-severity vulnerability in Notepad-plus-plus Notepad\+\+, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-06-26.
- How severe is CVE-2026-48800?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2026-48800 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.