FastAPI Guard is a security library for FastAPI that provides middleware to control IPs, log requests, and detect penetration attempts. An HTTP header injection vulnerability has been identified in versions prior to 2.0.0. By manipulating the X-Forwarded-For header, an attacker can potentially inject arbitrary IP addresses into the request. This vulnerability can allow attackers to bypass IP-based access controls, mislead logging systems, and impersonate trusted clients. It is especially impactful when the application relies on the X-Forwarded-For header for IP-based authorization or authentication. Users should upgrade to FastAPI Guard version 2.0.0 to receive a fix.
References
| Link | Resource |
|---|---|
| https://github.com/rennf93/fastapi-guard/commit/0b003fda4c678c1b514e95f319aee88113e9bf4b | Patch |
| https://github.com/rennf93/fastapi-guard/security/advisories/GHSA-77q8-qmj7-x7pp | Exploit Vendor Advisory |
Configurations
History
31 Dec 2025, 17:03
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/rennf93/fastapi-guard/commit/0b003fda4c678c1b514e95f319aee88113e9bf4b - Patch | |
| References | () https://github.com/rennf93/fastapi-guard/security/advisories/GHSA-77q8-qmj7-x7pp - Exploit, Vendor Advisory | |
| First Time |
Fastapi-guard fastapi Guard
Fastapi-guard |
|
| CPE | cpe:2.3:a:fastapi-guard:fastapi_guard:*:*:*:*:*:*:*:* |
07 May 2025, 14:13
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
|
06 May 2025, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-05-06 15:16
Updated : 2025-12-31 17:03
NVD link : CVE-2025-46814
Mitre link : CVE-2025-46814
CVE.ORG link : CVE-2025-46814
JSON object : View
Products Affected
fastapi-guard
- fastapi_guard
CWE
CWE-74
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
