What is CVE-2026-52884?

CVE-2026-52884 is a high-severity vulnerability in Notepad-plus-plus, classified under CWE-42. CVSS score: 7.8/10. Published 2026-06-26.

How severe is CVE-2026-52884?

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

Vulnerability in Notepad-plus-plus

CVE-2026-52884

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 truste…

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-42

References

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

Frequently asked questions

What is CVE-2026-52884?: CVE-2026-52884 is a high-severity vulnerability in Notepad-plus-plus, classified under CWE-42. CVSS score: 7.8/10. Published 2026-06-26.
How severe is CVE-2026-52884?: High severity. CVSS v3 base score is 7.8 out of 10.