CVE-2025-12181

ContentStudio <= 1.3.7 - Authenticated (Author+) Arbitrary File Upload

HIGH
8.8
CVSS Score
Published: December 5, 2025 at 05:31 AM UTC
Updated: October 18, 2026 at 03:10 PM UTC
1 product affected across 1 vendorContentstudio

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Severity
HIGH8.8
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

The ContentStudio plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the cstu_update_post() function in all versions up to, and including, 1.3.7. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v ≤ 1.3.70

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-434

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