MEDIUM

CVE-2020-15299

CVSS v3

6.1

MEDIUM

EPSS Score

47.0 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2020-15299 yet.

Full record on NVD

Description

A reflected Cross-Site Scripting (XSS) Vulnerability in the KingComposer plugin through 2.9.4 for WordPress allows remote attackers to trick a victim into submitting an install_online_preset AJAX request containing base64-encoded JavaScript (in the kc-online-preset-data POST parameter) that is executed in the victim's browser.

Technical details

Published: 2020-07-09

Frequently asked questions

What is CVE-2020-15299?

Is CVE-2020-15299 actively exploited?

Active exploitation of CVE-2020-15299 has not been confirmed. Its EPSS score was 47.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-15299?

CVE-2020-15299 has a CVSS v3 base score of 6.1 (MEDIUM severity).

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