Improper File Validation in Compress & Upload Plugin for WordPress
CVE-2025-8889

3.8LOW

Key Information:

Vendor

WordPress
Status
Compress & Upload
Vendor
CVE Published:
9 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8889?

The Compress & Upload plugin for WordPress, prior to version 1.0.5, contains a security flaw where it fails to properly validate uploaded files. This oversight enables users with elevated privileges, such as administrators, to upload arbitrary files to the server, even in environments like multisite setups where such actions should be restricted. This vulnerability poses a risk of unauthorized access and potential exploitation.

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Deploy the Patch

Affected Version(s)

Compress & Upload 0 < 1.0.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-8889 - Proof of Concept

References

https://wpscan.com/vulnerability/5d84a577-62aa-4aa2-ac39-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
3.8
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muhammed Çelik
WPScan
JSON
.