What is CVE-2026-48778?

CVE-2026-48778 is a high-severity vulnerability in Notepad-plus-plus, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-06-26.

How severe is CVE-2026-48778?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Notepad-plus-plus

CVE-2026-48778

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, the <GUIConfig name="commandLineInterpreter"> tag in config.xml is read by NppXml::value() (Parameters.cpp:6430) and stored in _nppGUI._commandLineInterpreter withou…

Vulnerability class: Command Injection (OS Command Injection)

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 — versions < 8.9.6.1

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-48778?: CVE-2026-48778 is a high-severity vulnerability in Notepad-plus-plus, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-06-26.
How severe is CVE-2026-48778?: High severity. CVSS v3 base score is 7.8 out of 10.