---
cve: "CVE-2026-52886"
severity: "MEDIUM"
cvss: 5.1
epss: "18%"
vendor: "notepad-plus-plus"
kev: false
exploited: false
published: "2026-08-17 20:16:44"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T18:20:15+02:00"
---

# CVE-2026-52886

> 5.1 MEDIUM · 🧪 PoC

## Beschreibung

Notepad++ is a free and open-source source code editor. Prior to 8.9.7, Notepad++ validates the backupFilePath attribute from session.xml with std::wstring::starts_with against the expected backup directory without path normalization, allowing parent-directory sequences during snapshot-mode restoration to read an arbitrary user-readable file outside the backup directory into an editor tab. This issue is fixed in version 8.9.7.

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |

## Patch verfügbar (OSV)

- 7e66f36db666a13b09fb5c31232ab2ca1c2ebccc (Commit)
- 6634650414ff91220a4c353b7fe5ad741af0f9f9 (Commit)

## Referenzen

- <https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-rqfm-pw34-r7j6>
- <https://github.com/notepad-plus-plus/notepad-plus-plus/commit/7e66f36db666a13b09fb5c31232ab2ca1c2ebccc>
- <https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-52886) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_