Vulnerability in Notepad-plus-plus Notepad\+\+
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…
EPSS: 0.002 (11.5th 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\+\+ — versions 8.9.6.1
- Notepad-plus-plus — versions = 8.9.6.1
Weakness classification (CWE)
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-2026-52884?
- CVE-2026-52884 is a high-severity vulnerability in Notepad-plus-plus Notepad\+\+, 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.