What is the CVSS score of CVE-2026-78088?

CVE-2026-78088 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.6%.

Contest Gallery CVE-2026-78088

EUVD-2026-80098 HIGH

Unrestricted Upload of File with Dangerous Type (CWE-434)

2026-09-16 Wordfence

GHSA-xjx7-xfj8-wrqm

WordPress RCE File Upload Contest Gallery Upload Vote Photos Media Sell With Paypal Stripe Contest Gallery Wordpress Plugin

8.8

CVSS 3.1 · Vendor: Wordfence

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Vulnerability Assessment

Weakness

CWE

CWE-434

OWASP Top 10:2025

A06:2025 - Insecure Design

ASVS 5.0

V5 - File Handling File type validation, storage isolation

MITRE ATT&CK

2 techniques across 2 tactics: Command and Control, Persistence

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 16, 2026

Arbitrary file overwrite in the Contest Gallery WordPress plugin (Upload & Vote Photos, Media, Sell with PayPal & Stripe) affects all versions up to and including 32.0.1, where the 'baseUrlForFacebook' parameter is passed to a file-writing routine without adequate path validation. Exploitation requires at least a subscriber-level account on the target WordPress site, but then allows overwriting known files on the server, which can escalate to remote code execution when the overwritten path is a PHP file that the web server later executes. No public exploit code or CISA KEV listing was provided in the source data for this CVE, so active exploitation is unconfirmed at time of analysis.

Affected VersionsENISA

Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe 0 ≤32.0.1

Affected Packages

euvd contest_gallery_upload_vote_photos_media_sell_with_paypal_stripe no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Wordfence) PRIMARY 8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (Wordfence) · only source for this CVE.

CVSS VectorVendor: Wordfence

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

The Contest Gallery - Upload & Vote Photos, Media, Sell with PayPal & Stripe plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Overwrite in all versions up to, and including, 32.0.1 due to insufficient file path validation in the 'baseUrlForFacebook' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite known files which may lead to remote code execution when certain preconditions are met.

Threat Intelligence Overview

EPSS Score

0.6%

Top 53% exploitable

Data Quality

4 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.6%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +44

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Malicious File Upload HIGH

Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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