CVE-2026-2978Public exploitNetwork attack vector

Authenticated code execution via spoofed upload type

Published Feb 23, 2026 · Updated Feb 23, 2026

Unrestricted file upload in FastapiAdmin 2.0 through 2.2.0 allows remote authenticated users to write files via the Scheduled Task API. UploadUtil.check_file_extension derives an allowed extension solely from the client-supplied Content-Type header, then upload_file writes the original content without checking its bytes. Access requires the module_system:param:upload permission; a crafted upload can write attacker-controlled content and combine with scheduled tasks to execute code.

CVSS severity8.8
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in FastapiAdmin 2.0 through 2.2.0 allows remote authenticated users to write files via the Scheduled Task API. UploadUtil.check_file_extension derives an allowed extension solely from the client-supplied Content-Type header, then upload_file writes the original content without checking its bytes. Access requires the module_system:param:upload permission; a crafted upload can write attacker-controlled content and combine with scheduled tasks to execute code.

The record

CVE
CVE-2026-2978
Published
Feb 23, 2026
Updated
Feb 23, 2026
Vendor
fastapi-admin
Product
FastAPI Admin
Classifications
CWE-434, CWE-284, T1053
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0
  2. Affected versionversion=2.1
  3. Affected versionversion=2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

fastapi-admin · FastAPI Adminversion=2.0; version=2.1; version=2.2.0

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-284Improper Access Control
T1053Scheduled Task/Job

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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