CVE-2026-2977
Published: 23 February 2026
Summary
CVE-2026-2977 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 14.9th 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 web app directly enables initial access via T1190; facilitates arbitrary file ingress (T1105) and web shell deployment (T1505.003) for execution/persistence.
NVD Description
A security vulnerability has been detected in FastApiAdmin up to 2.2.0. This affects the function upload_controller of the file /backend/app/api/v1/module_common/file/controller.py of the component Scheduled Task API. Such manipulation leads to unrestricted upload. It is possible to launch the attack remotely.…
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The exploit has been disclosed publicly and may be used.
Deeper analysisAI
CVE-2026-2977 is a security vulnerability in FastApiAdmin versions up to 2.2.0 that enables unrestricted file upload. It affects the upload_controller function located in the file /backend/app/api/v1/module_common/file/controller.py within the Scheduled Task API component. Published on 2026-02-23, the issue 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) and is linked to CWE-284 (Improper Access Control) and CWE-434 (Unrestricted Upload of File with Dangerous Type).
The vulnerability is exploitable remotely by an attacker with low privileges, requiring low complexity and no user interaction. Manipulation of the affected upload_controller function allows unrestricted upload, potentially leading to low-level impacts on confidentiality, integrity, and availability.
Advisories and details on the vulnerability, including potential mitigation steps, are available from VulDB at https://vuldb.com/?ctiid.347361, https://vuldb.com/?id.347361, and https://vuldb.com/?submit.756144, as well as a GitHub repository at https://github.com/CC-T-454455/Vulnerabilities/tree/master/fastapi-admin/vulnerability-3. The exploit has been publicly disclosed and may be used in attacks.
Details
- CWE(s)