Paper/Archive/CVE-2026-113703

CVE-2026-113703

giuseppe99barchetta SuggestArr — SuggestArr before 3.0.0 Authentication Bypass via X-Forwarded-For Spoofing

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
SuggestArr1.0.4 – < 3.0.03.0.0CNA

Scores by source

VulnCheck (CNA)9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
VulnCheck (CNA)9.1CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

patchgithub.com/giuseppe99barchetta/SuggestArr/releases/tag/v3.0.0exploitgithub.com/giuseppe99barchetta/SuggestArr/security/advisories/GHSA-fcjm-xhw8-pmh5writeupvulncheck.com/advisories/suggestarr-before-authentication-bypass-via-x-forwarded-for-spoofing