CVE-2025-12153Network attack vector

Arbitrary file upload via missing type validation

Published Dec 5, 2025 · Updated Dec 5, 2025

Unrestricted file upload in tsaiid Featured Image via URL 0.1 and earlier allows remote authenticated users to upload arbitrary files. The featured-image import path saves remotely fetched content into the Media Library without validating the file type, and no exact function name is publicly identified. Contributor-level access or higher is required; code execution depends on the web server treating an uploaded file as executable content.

CVSS severity8.8
High
EPSS probability0.55%
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 tsaiid Featured Image via URL 0.1 and earlier allows remote authenticated users to upload arbitrary files. The featured-image import path saves remotely fetched content into the Media Library without validating the file type, and no exact function name is publicly identified. Contributor-level access or higher is required; code execution depends on the web server treating an uploaded file as executable content.

The record

CVE
CVE-2025-12153
Published
Dec 5, 2025
Updated
Dec 5, 2025
Vendor
I-Ta Tsai
Product
Featured Image via URL
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 5, 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?

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

  1. Affected versionversion=* <=0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

I-Ta Tsai · Featured Image via URLversion=* <=0.1

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

Public exploit references

No public exploit references are available in this record.

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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