CVE-2026-2978
Published: 23 February 2026
Summary
CVE-2026-2978 is a medium-severity Improper Access Control (CWE-284) vulnerability in Fastapiadmin Fastapiadmin. Its CVSS base score is 6.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 4.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control enforces ownership-based restrictions on portable storage device use, directly implementing access control over media insertion into organizational systems.
Hardware write-protect enforces access control on critical resources (e.g., firmware) independent of software state.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload (CWE-434) in public-facing FastAPI admin endpoint directly enables T1190 exploitation; facilitates T1105 tool/file ingress and T1505.003 web shell deployment via malicious uploads.
NVD Description
A vulnerability was detected in FastApiAdmin up to 2.2.0. This vulnerability affects the function upload_file_controller of the file /backend/app/api/v1/module_system/params/controller.py of the component Scheduled Task API. Performing a manipulation results in unrestricted upload. The attack can be initiated remotely. The exploit…
more
is now public and may be used.
Deeper analysisAI
CVE-2026-2978 is a vulnerability in FastApiAdmin versions up to 2.2.0 that enables unrestricted file upload. It affects the upload_file_controller function located in the file /backend/app/api/v1/module_system/params/controller.py within the Scheduled Task API component. The issue, associated with CWEs-284 (Improper Access Control) and CWE-434 (Unrestricted Upload of File with Dangerous Type), was published on 2026-02-23 and carries a CVSS v3.1 base score of 6.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).
An attacker can exploit this vulnerability remotely by performing a manipulation on the affected endpoint. Exploitation requires low privileges (PR:L), low attack complexity, and no user interaction, allowing network-accessible initiation. Successful attacks result in low-level impacts to confidentiality, integrity, and availability, stemming from the unrestricted upload capability.
References including VulDB entries (vuldb.com/?ctiid.347362, vuldb.com/?id.347362, vuldb.com/?submit.756155) and a GitHub repository (github.com/CC-T-454455/Vulnerabilities/tree/master/fastapi-admin/vulnerability-4) detail the issue, with the latter hosting a public exploit that may be used. Security practitioners should review these advisories for any recommended mitigations or patches.
The exploit is publicly available, increasing the risk of active exploitation in affected environments.
Details
- CWE(s)