CVE-2026-46511— HAXcms: Mass Token Exfiltration and Cross-Tenant Hijack
Possible ATT&CK Techniques 3AI
T1005 · Data from Local System T1059 · Command and Scripting Interpreter T1530 · Data from Cloud StorageAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| haxtheweb | haxcms-nodejs | < 26.0.0 | affected |
| haxtheweb | haxcms-php | < 26.0.0 | affected |
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I. Basic Information for CVE-2026-46511
Vulnerability Information
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Vulnerability Title
HAXcms: Mass Token Exfiltration and Cross-Tenant Hijack
Source: CVE Program / CVE List V5
Vulnerability Description
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an attack chain utilizing Stored XSS alongside dynamic token exposure in the `/system/api/connectionSettings` endpoint allows an authenticated attacker to perform a complete cross-tenant account takeover. The API dynamically leaks the active session's authentication tokens (including the `jwt`, `user_token`, `site_token`, and `appstore_token`) into a global JavaScript variable (`window.appSettings`). An attacker can exploit the XSS vulnerability to force a victim's browser to silently fetch their specific connection settings, extract the tokens, and exfiltrate them to an attacker-controlled webhook. Version 26.0.0 patches 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
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
HAX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HAX是HAX The Web开源的一个HAX+CMS使用PHP后端管理的微型网站。 HAX CMS PHP 26.0.0之前版本存在安全漏洞，该漏洞源于存储型XSS与/system/api/connectionSettings端点动态令牌暴露结合，可能导致经过身份验证的攻击者实现完全跨租户账户接管。
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-nodejs | < 26.0.0 | - | |
| haxtheweb | haxcms-php | < 26.0.0 | - |
II. Public POCs for CVE-2026-46511
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-46511 (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-2026-46400 | HAXCMS PHP has a File Upload Validation Bypass | |
| 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-nodejs
- CVE-2026-46357
HAX CMS NodeJS application Vulnerable to Denial of Service u - CVE-2026-46496
HAX CMS: Stored XSS via '<video-player>' component allows ar - CVE-2026-46396
HAX CMS has a stored XSS via <iframe> that allows access to - CVE-2026-46395
HAX CMS Vulnerable to Private Key Disclosure via Broken HMAC - CVE-2026-46393
HAXcms createSite SSRF Enables Arbitrary File Read
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-2026-46400
HAXCMS PHP has a File Upload Validation Bypass - CVE-2026-46398
HAX CMS Missing Secure Flag on Cookie
Same weakness: CWE-79
- CVE-2026-73336
Joomla! Core - [20260806] - XSS through schema.org outputs i - CVE-2026-45116
MyBB: Profile field type confusion XSS - CVE-2026-45115
MyBB: Buddy/ignore list username XSS - CVE-2026-55839
Kestra: Stored XSS via custom Markdown [[link]] attribute in - CVE-2026-45733
Trilium: Stored XSS in note icon rendering leads to Remote C
V. Comments for CVE-2026-46511
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