What is the CVSS score of CVE-2025-15636?

CVE-2025-15636 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

Youtube Showcase CVE-2025-15636

EUVD-2025-209481 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-04-15 Patchstack

GHSA-9xj2-4996-7w4r

WordPress XSS Youtube Showcase Wordpress Plugin Emarket Design

6.5

CVSS 3.1 · Vendor: Patchstack

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Vulnerability Assessment

Weakness

CWE

CWE-79

OWASP Top 10:2025

A05:2025 - Injection

ASVS 5.0

V1 - Encoding and Sanitization Output encoding, context-aware escaping

MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

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

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 26, 2026

Stored cross-site scripting in Emarket-design's YouTube Showcase WordPress plugin up to version 3.5.1 allows authenticated attackers to inject malicious scripts that execute in the context of other users' browsers. No active exploitation or public exploit code has been reported, and EPSS indicates a low 0.03% probability of exploitation over the next 30 days. The vulnerability carries a medium CVSS 6.5 score and requires low-privilege access and user interaction.

Affected VersionsENISA

YouTube Showcase n/a ≤3.5.1

Affected Packages

euvd youtube_showcase 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 (Patchstack) PRIMARY 6.5 MEDIUM

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

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

CVSS VectorVendor: Patchstack

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

DescriptionCVE.org

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Emarket-design YouTube Showcase allows Stored XSS.This issue affects YouTube Showcase: from n/a through 3.5.1.

Threat Intelligence Overview

EPSS Score

0.0%

Top 91% exploitable

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS

Vulnrichment CIRCL

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 MEDIUM

CISA KEV No

Public POC No

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

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.