CVE-2026-90937— froxlor before 2.2.5 nginx/Apache Configuration Injection via subdomain redirect URL
Quick assessment
Affected
froxlor froxlor
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.
在 2.2.5 版本之前的 Froxlor 中，系统未对子域名重定向 URL 中的换行字符进行校验。这使得经过身份验证的客户能够注入任意的 Nginx 或 Apache 配置指令。攻击者可以提交包含字面换行符的 URL，这些换行符会在 cron 重建过程中被原样写入 vhost 配置文件，从而导致 Web 服务器配置损坏、服务中断，甚至导致托管域名的 HTTP 响应被劫持。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-90937
Vulnerability Information
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Vulnerability Title
froxlor before 2.2.5 nginx/Apache Configuration Injection via subdomain redirect URL
Source: CVE Program / CVE List V5
Vulnerability Description
froxlor versions before 2.2.5 fail to validate newline characters in subdomain redirect URLs, allowing authenticated customers to inject arbitrary nginx or Apache configuration directives. Attackers can supply URLs containing literal newlines that are written verbatim into vhost config files during cron rebuild, enabling web server configuration corruption, denial of service, or hijacking of HTTP responses across hosted domains.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-90937
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-90937 (2)
Same Patch Batch · froxlor · 2026-09-14 · 4 CVEs total
| CVE-2024-58383 | 7.3 HIGH | Froxlor before 2.2.0 Insecure File Permissions mysql.conf |
| CVE-2026-90935 | 4.3 MEDIUM | Froxlor before 2.3.7 Authorization Bypass via Mysqls.add API |
| CVE-2026-90936 | 4.3 MEDIUM | Froxlor before 2.3.7 Information Disclosure via customer_email.php |
IV. Related Vulnerabilities
Same product: froxlor
-
CVE-2026-90936
Froxlor before 2.3.7 Information Disclosure via customer_ema -
CVE-2026-90935
Froxlor before 2.3.7 Authorization Bypass via Mysqls.add API -
CVE-2024-58383
Froxlor before 2.2.0 Insecure File Permissions mysql.conf -
CVE-2026-90767
Froxlor before 2.3.12 SSH Key Injection via authorized_keys -
CVE-2026-55593
Froxlor: CSRF Vulnerability in Froxlor AJAX Endpoint — Missi
Same vendor: froxlor
-
CVE-2026-90936
Froxlor before 2.3.7 Information Disclosure via customer_ema -
CVE-2026-90935
Froxlor before 2.3.7 Authorization Bypass via Mysqls.add API -
CVE-2024-58383
Froxlor before 2.2.0 Insecure File Permissions mysql.conf -
CVE-2026-90767
Froxlor before 2.3.12 SSH Key Injection via authorized_keys -
CVE-2026-55593
Froxlor: CSRF Vulnerability in Froxlor AJAX Endpoint — Missi
Same weakness: CWE-93
-
CVE-2026-90767
Froxlor before 2.3.12 SSH Key Injection via authorized_keys -
CVE-2026-48019
CRLF injection in Laravel's default email rule enables SMTP -
CVE-2026-75925
IXON VPN Client CRLF Injection -
CVE-2026-84962
Authenticated KMS request forgery via CRLF injection in GCP -
CVE-2026-84379
HTTPX2: Multipart part header injection via unvalidated file
V. Comments for CVE-2026-90937
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