CVE-2022-40050Public exploitNetwork attack vector

Unauthenticated arbitrary file upload via upload endpoint

Published Sep 26, 2022 · Updated May 21, 2025

Arbitrary file upload in ZFile 4.1.1 allows remote attackers to write arbitrary files via the /file/upload/1 endpoint. The endpoint accepts uploaded content without restricting dangerous file types or enforcing an allowlist. No authentication or user interaction is required; consequences depend on server handling of uploaded files and can include code execution or data overwrite.

CVSS severity9.8
Critical
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in ZFile 4.1.1 allows remote attackers to write arbitrary files via the /file/upload/1 endpoint. The endpoint accepts uploaded content without restricting dangerous file types or enforcing an allowlist. No authentication or user interaction is required; consequences depend on server handling of uploaded files and can include code execution or data overwrite.

The record

CVE
CVE-2022-40050
Published
Sep 26, 2022
Updated
May 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 26, 2022CVE publishedPublication date reported by the CVE source.
  2. May 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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