CVE-2026-2979
Published: 23 February 2026
Summary
CVE-2026-2979 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 18.9th 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 a network-accessible web admin component directly enables initial access via exploitation of a public-facing app (T1190) and deployment of web shells for execution (T1505.003).
NVD Description
A flaw has been found in FastApiAdmin up to 2.2.0. This issue affects the function user_avatar_upload_controller of the file /backend/app/api/v1/module_system/user/controller.py of the component Scheduled Task API. Executing a manipulation can lead to unrestricted upload. The attack can be launched remotely.…
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The exploit has been published and may be used.
Deeper analysisAI
CVE-2026-2979 is a vulnerability in FastApiAdmin versions up to 2.2.0 that enables unrestricted file upload. The flaw affects the user_avatar_upload_controller function in the file /backend/app/api/v1/module_system/user/controller.py within the Scheduled Task API component. Published on 2026-02-23, it 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).
A remote attacker with low privileges (PR:L) can exploit this issue with low attack complexity and no user interaction. Exploitation allows manipulation leading to impacts on confidentiality, integrity, and availability, albeit at a low level per the CVSS metrics.
Advisories referenced in VulDB entries (https://vuldb.com/?ctiid.347363, https://vuldb.com/?id.347363, https://vuldb.com/?submit.756156) document the vulnerability details. A GitHub repository at https://github.com/CC-T-454455/Vulnerabilities/tree/master/fastapi-admin/vulnerability-5 contains a published exploit that may be used.
The published exploit highlights the risk of real-world exploitation in affected FastApiAdmin deployments.
Details
- CWE(s)