Vulnerability in Notepad-plus-plus Notepad\+\+
CVE-2026-52885
Notepad++ is a free and open-source source code editor. Prior to 8.9.6.4, NppCommands.cpp checks the HMAC of the on-disk shortcuts.xml at the moment a user command fires (Time-of-Check). However, the command payload is taken from the in-me…
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.001 (3.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Notepad-plus-plus Notepad\+\+
- Notepad-plus-plus — versions < 8.9.6.4
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-2026-52885?
- CVE-2026-52885 is a medium-severity vulnerability in Notepad-plus-plus Notepad\+\+, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.3/10. Published 2026-06-26.
- How severe is CVE-2026-52885?
- Medium severity. CVSS v3 base score is 6.3 out of 10.
- Is CVE-2026-52885 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.