EUVD-2026-60374Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local write access to session.xml and user interaction to launch Notepad++ required; confidentiality high since arbitrary user-readable files can be exposed, but no integrity or availability impact applies.
Primary rating from Vendor (github).
CVSS VectorVendor: github
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Path traversal in Notepad++ before version 8.9.7 enables local attackers with write access to the user's profile directory to read arbitrary user-readable files outside the designated backup folder by poisoning session.xml. The backupFilePath attribute is validated with std::wstring::starts_with against the expected backup directory prefix but without prior path normalization, allowing dot-dot sequences to bypass the check during snapshot-mode session restoration and load an out-of-bounds file into an editor tab. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the attacker can write to or replace the session.xml file in the victim's Notepad++ profile directory (%APPDATA%\Notepad++\session.xml) before the victim launches the application. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 5.1 (AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N) accurately characterizes a moderate-severity, locally-constrained information-disclosure issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Notepad++ to version 8.9.7 or later, confirmed available at https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-22 – Path Traversal
View allSame technique Path Traversal
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External POC / Exploit Code
Leaving vuln.today