Cloudflare Image Resizing <= 1.5.6 - Missing Authentication to Unauthenticated Remote Code Execution via rest_pre_dispatch Hook

2025-08-18 19:08

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Strategic Overview

Status

Patched in 1.5.7

Affected PluginCloudflare Image Resizing – Optimize & Accelerate Your Images

Affected Version<= 1.5.6

CVSS9.8Critical

CVECVE-2025-8723

View all Cloudflare Image Resizing – Optimize & Accelerate Your Images vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 1.5.7, or a newer patched version --- IDENTIFIER: CWE-94 (Improper Control of Generation of Code ('Code Injection')) The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

External References

https://www.cve.org/CVERecord?id=CVE-2025-8723 https://www.wordfence.com/threat-intel/vulnerabilities/id/0f3b3c1a-1d45-4e2f-854a-171fe759257b

CVSS Vector

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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