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CVE-2026-3844— Breeze Cache <= 2.4.4 - Unauthenticated Arbitrary File Upload via fetch_gravatar_from_remote

Quick assessment

Affected
cloudways Breeze Cache
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Breeze Cache 2.4.4及之前版本存在代码问题漏洞，该漏洞源于fetch_gravatar_from_remote函数中缺少文件类型验证，可能导致未经身份验证的攻击者上传任意文件，从而实现远程代码执行。

CVSS 9.8 · Critical EPSS 3.76% · P90

Public Exploits 1

Nuclei · 1 CVE-2026-3844.yaml [template]
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I. Basic Information for CVE-2026-3844

Vulnerability Information
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Vulnerability Title
Breeze Cache <= 2.4.4 - Unauthenticated Arbitrary File Upload via fetch_gravatar_from_remote
Source: CVE Program / CVE List V5
Vulnerability Description
The Breeze Cache plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'fetch_gravatar_from_remote' function in all versions up to, and including, 2.4.4. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. The vulnerability can only be exploited if "Host Files Locally - Gravatars" is enabled, which is disabled by default.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Breeze Cache 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Breeze Cache 2.4.4及之前版本存在代码问题漏洞，该漏洞源于fetch_gravatar_from_remote函数中缺少文件类型验证，可能导致未经身份验证的攻击者上传任意文件，从而实现远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
cloudways Breeze Cache 0 ~ 2.4.4 -

II. Public POCs for CVE-2026-3844

# POC Description Source Link Shenlong Link
1 Breeze Cache WordPress plugin <= 2.4.4 contains an unrestricted file upload vulnerability caused by missing file type validation in 'fetch_gravatar_from_remote' function, letting unauthenticated attackers upload arbitrary files, exploit requires 'Host Files Locally - Gravatars' enabled. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-3844.yaml POC Details
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III. Intelligence Information for CVE-2026-3844

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IV. Related Vulnerabilities

Same product: Breeze Cache
Same vendor: cloudways
Same weakness: CWE-434

V. Comments for CVE-2026-3844

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