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CVE-2026-113703— SuggestArr before 3.0.0 Authentication Bypass via X-Forwarded-For Spoofing

Quick assessment

Affected
giuseppe99barchetta SuggestArr
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.

SuggestArr 在 3.0.0 版本之前存在一个身份验证绕过漏洞，该漏洞出现在其 身份验证模式中。具体而言， 中的 函数信任由客户端控制的 值；而该值源自可被伪造的 请求头，原因是 中配置了 。攻击者可以发送一个将 头设置为受信任的 CIDR 地址（例如 ）的请求，从而通过 函数获得未经验证的管理员会话，进而无需提供任何凭证即可完全访问 和 等管理端点。

CVSS 9.3 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-113703

Vulnerability Information
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Vulnerability Title
SuggestArr before 3.0.0 Authentication Bypass via X-Forwarded-For Spoofing
Source: CVE Program / CVE List V5
Vulnerability Description
SuggestArr before 3.0.0 contains an authentication bypass vulnerability in its local_bypass authentication mode where enforce_authentication() in api_service/auth/middleware.py trusts the client-controlled request.remote_addr value, which is derived from the spoofable X-Forwarded-For header due to ProxyFix(x_for=1) configuration in api_service/app.py. Attackers can send a request with X-Forwarded-For set to a trusted CIDR address such as 127.0.0.1 to be granted an unauthenticated admin session via _load_bypass_user_context(), gaining full administrative access to endpoints like /api/users and /api/jobs without providing any credentials.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
giuseppe99barchetta SuggestArr 1.0.4 ~ 3.0.0 -

II. Public POCs for CVE-2026-113703

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-113703

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Other References for CVE-2026-113703 (3)

IV. Related Vulnerabilities

Same weakness: CWE-290

V. Comments for CVE-2026-113703

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