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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/giuseppe99barchetta/SuggestArr/releases/tag/v3.0.0
- https://github.com/giuseppe99barchetta/SuggestArr/security/advisories/GHSA-fcjm-
- https://www.vulncheck.com/advisories/suggestarr-before-authentication-bypass-via
- https://github.com/giuseppe99barchetta/SuggestArr/security/advisories/GHSA-fcjm-
FAQ
What is CVE-2026-113703?
CVE-2026-113703 is a vulnerability with a CVSS score of 9.3 (CRITICAL). 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-contr...
How severe is CVE-2026-113703?
CVE-2026-113703 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-113703?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.