PatchTheCVECVE-2025-46814: FastAPI Guard is a security library for FastAPI that provides middleware to control IPs, log requests, and det
CVE-2025-46814 is a low-severity flaw (CVSS 3.4) affecting fastapi guard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 imp
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 3.4 (Low) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 73%) |
| CISA exploited list | No |
| Weakness | CWE-74 |
| Published | 2025-05-06 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-46814?
fastapi guard: upgrade to 2.0.0. Exact commands for each OS are on this page.
Is CVE-2025-46814 being exploited?
CVE-2025-46814 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-46814 affect?
CVE-2025-46814 affects fastapi guard. Severity is low (CVSS 3.4). 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 t
How urgent is CVE-2025-46814?
Priority 24/100. Public exploit reference
Software pages
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