Unrestricted Upload Vulnerability in FastApiAdmin by FastApi
CVE-2026-2979

5.3MEDIUM

Key Information:

Vendor

FastApi

Status
Fastapiadmin
Vendor
CVE Published:
23 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2979?

A vulnerability has been identified in FastApiAdmin versions up to 2.2.0, where the function user_avatar_upload_controller, located in /backend/app/api/v1/module_system/user/controller.py, is susceptible to unrestricted file uploads. This flaw allows an attacker to manipulate the upload functionality, potentially leading to unauthorized file uploads. The attack can be executed remotely, posing a significant risk to the integrity and security of the system. The exploit has been documented, and users are urged to review their configurations and apply necessary security measures.

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Deploy the Patch

Affected Version(s)

FastApiAdmin 2.0

FastApiAdmin 2.1

FastApiAdmin 2.2.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-2979 - Proof of Concept

References

https://vuldb.com/?id.347363
vdb-entrytechnical-description
https://vuldb.com/?ctiid.347363
signaturepermissions-required
https://vuldb.com/?submit.756156
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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