CVE-2026-46400— HAXCMS PHP has a File Upload Validation Bypass
Quick assessment
Affected
haxtheweb haxcms-php
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
HAXCMS是HAX The Web开源的一个内容管理系统。 HAX CMS PHP 11.0.6版本至25.0.0之前版本存在代码问题漏洞，该漏洞源于文件上传功能仅使用正则表达式验证文件扩展名而未检查实际文件内容或MIME类型，可能导致攻击者上传伪装成合法图像文件的恶意文件，实现远程代码执行。
Possible ATT&CK Techniques 1 AI
T1505.003 · Web ShellAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| haxtheweb | haxcms-php | >= 11.0.6, < 25.0.0 |
affected |
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-46400
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
HAXCMS PHP has a File Upload Validation Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Starting in version 11.0.6 and prior to version 25.0.0, the file upload functionality in HAXCMS PHP only validates file extensions using a regex pattern without checking the actual file content or MIME type. This allows attackers to upload malicious files (e.g., PHP webshells) disguised as legitimate image files, potentially leading to remote code execution. Version 25.0.0 contains a fix for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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
HAX CMS PHP 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HAXCMS是HAX The Web开源的一个内容管理系统。 HAX CMS PHP 11.0.6版本至25.0.0之前版本存在代码问题漏洞，该漏洞源于文件上传功能仅使用正则表达式验证文件扩展名而未检查实际文件内容或MIME类型，可能导致攻击者上传伪装成合法图像文件的恶意文件，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)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| haxtheweb | haxcms-php | >= 11.0.6, < 25.0.0 | - |
|
II. Public POCs for CVE-2026-46400
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-46400
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-46400 (1)
Same Patch Batch · haxtheweb · 2026-06-05 · 16 CVEs total
| CVE-2026-46392 | 8.7 HIGH | HAX CMS PHP Has a Stored XSS via Case-Sensitivity Mismatch in HTML Upload Validation |
| CVE-2026-46493 | 7.5 HIGH | haxtheweb/haxcms-php uses insecure method for generating salt |
| CVE-2026-46357 | 6.5 MEDIUM | HAX CMS NodeJS application Vulnerable to Denial of Service using Malicious Import Request |
| CVE-2026-46397 | 6.5 MEDIUM | haxcms-php Local File Inclusion via saveOutline API Location Parameter v2.0 |
| CVE-2026-46396 | HAX CMS has a stored XSS via <iframe> that allows access to sensitive client-side data and | |
| CVE-2026-46401 | HAX CMS PHP has Insufficient Session Expiration | |
| CVE-2026-46390 | HAX CMS has Unauthenticated Git Access via User-Controlled Key | |
| CVE-2026-46394 | HAX CMS Vulnerable to Command Injection using Git.php | |
| CVE-2026-46496 | HAX CMS: Stored XSS via '<video-player>' component allows arbitrary JavaScript execution a | |
| CVE-2026-46398 | HAX CMS Missing Secure Flag on Cookie | |
| CVE-2026-46395 | HAX CMS Vulnerable to Private Key Disclosure via Broken HMAC Implementation | |
| CVE-2026-46511 | HAXcms: Mass Token Exfiltration and Cross-Tenant Hijack | |
| CVE-2026-46391 | HAX open-apis: Credential Theft via Server-Side Request Forgery (SSRF) in open-apis | |
| CVE-2026-46393 | HAXcms createSite SSRF Enables Arbitrary File Read | |
| CVE-2026-46399 | Authenticated Remote Code Execution via File Overwrite |
IV. Related Vulnerabilities
Same product: haxcms-php
-
CVE-2026-46493
haxtheweb/haxcms-php uses insecure method for generating sal -
CVE-2026-46398
HAX CMS Missing Secure Flag on Cookie -
CVE-2026-46397
haxcms-php Local File Inclusion via saveOutline API Location -
CVE-2026-46394
HAX CMS Vulnerable to Command Injection using Git.php -
CVE-2026-46392
HAX CMS PHP Has a Stored XSS via Case-Sensitivity Mismatch i
Same vendor: haxtheweb
-
CVE-2026-46357
HAX CMS NodeJS application Vulnerable to Denial of Service u -
CVE-2026-46493
haxtheweb/haxcms-php uses insecure method for generating sal -
CVE-2026-46401
HAX CMS PHP has Insufficient Session Expiration -
CVE-2026-46398
HAX CMS Missing Secure Flag on Cookie -
CVE-2026-46397
haxcms-php Local File Inclusion via saveOutline API Location
Same weakness: CWE-434
-
CVE-2026-104471
YesWiki before 4.6.7 Unrestricted File Upload via Bazar CSV -
CVE-2026-92820
Ninja Forms - File Uploads <= 3.3.34 - Unauthenticated Arbit -
CVE-2026-64949
Unrestricted File Upload Leading to Remote Code Execution in -
CVE-2026-64947
CSRF Bypass Leading to Remote Code Execution via Unrestricte -
CVE-2026-103541
formtools.org Form Tools Ajax actions.php uploadFile unrestr
V. Comments for CVE-2026-46400
No comments yet