CVE-2026-6972
Received Received - Intake

Stored XSS in SKT Skill Bar WordPress Plugin

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: Wordfence

Description
The SKT Skill Bar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `chart_size` attribute of the `skillwrapper` shortcode in all versions up to, and including, 2.6. This is due to insufficient input sanitization and output escaping on the `chart_size` attribute, which is concatenated directly into an inline `<style>` block. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-6972
EUVD
EUVD-2026-53186

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
skt skill_bar to 2.6 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

The SKT Skill Bar WordPress plugin up to version 2.6 has a stored cross-site scripting (XSS) vulnerability in the skillwrapper shortcode. The chart_size attribute is not properly sanitized or escaped, allowing authenticated attackers with Contributor access or higher to inject malicious scripts into pages via inline style blocks.

Detection Guidance

Check WordPress sites for the SKT Skill Bar plugin versions up to 2.6. Look for suspicious inline style blocks in pages using the skillwrapper shortcode. Inspect user roles with Contributor access or higher for unauthorized script injections.

Impact Analysis

An attacker could steal user sessions, redirect visitors to malicious sites, or perform actions on their behalf. Users visiting compromised pages may have their data exposed or unknowingly execute harmful scripts.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Update the SKT Skill Bar plugin to the latest version. If an update is unavailable, disable or remove the plugin immediately. Review user roles and remove unnecessary Contributor-level access. Monitor pages for unexpected script injections.

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