How severe is CVE-2026-42214?

CVE-2026-42214 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-42214 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42214?

CVE-2026-42214 affects Dail8859 Notepad Next. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42214?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-42214 have an EU (EUVD) identifier?

Yes. CVE-2026-42214 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28410.

When was CVE-2026-42214 published?

CVE-2026-42214 was published on 2026-05-07 and last updated on 2026-06-17.

CVE-2026-42214

CVE-2026-42214 is a high-severity vulnerability in Dail8859 Notepad Next with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28410
Weakness: CWE-94
Affected product: Dail8859 Notepad Next
Published: 2026-05-07
Last modified: 2026-06-17

Description

Notepad Next is a cross-platform, reimplementation of Notepad++. Prior to version 0.14, NotepadNext's detectLanguageFromExtension() function interpolates a file's extension directly into a Lua script without sanitization. An attacker can craft a filename whose extension contains Lua code, which executes automatically when the victim opens the file in NotepadNext. Because luaL_openlibs() is called unconditionally, the full os, io, and package libraries are available to the injected code, enabling arbitrary command execution. This issue has been patched in version 0.14.

Frequently asked questions

What is CVE-2026-42214?: Notepad Next is a cross-platform, reimplementation of Notepad++. Prior to version 0.14, NotepadNext's detectLanguageFromExtension() function interpolates a file's extension directly into a Lua script without sanitization. An attacker can craft a filename whose extension contains Lua code, which executes automatically when the victim opens the file in NotepadNext. Because luaL_openlibs() is called unconditionally, the full os, io, and package libraries are available to the injected code, enabling arbitrary command execution. This issue has been patched in version 0.14.
How severe is CVE-2026-42214?: CVE-2026-42214 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-42214 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42214?: CVE-2026-42214 affects Dail8859 Notepad Next. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42214?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42214 have an EU (EUVD) identifier?: Yes. CVE-2026-42214 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28410.
When was CVE-2026-42214 published?: CVE-2026-42214 was published on 2026-05-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dail8859:notepad_next:*:*:*:*:*:*:*:*

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