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CVE-2025-14145: Niche Hero | Beautifully-designed blocks in seconds <= 1.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'spacing' Shortcode Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-07 · updated 2026-06-17
• Weakness: CWE-79

Description

The Niche Hero | Beautifully-designed blocks in seconds plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'spacing' parameter of the nh_row shortcode in all versions up to, and including, 1.0.5 due to insufficient input sanitization and output escaping. 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.

Affected products

• djrowling Niche Hero | Beautifully-designed blocks in seconds: through 1.0.5

References

• https://plugins.trac.wordpress.org/browser/niche-hero/tags/1.0.5/niche-hero.php#L302
• https://plugins.trac.wordpress.org/browser/niche-hero/trunk/niche-hero.php#L302
• https://www.wordfence.com/threat-intel/vulnerabilities/id/52368b7d-5fe2-444c-bd7f-e4385dffa8a9?source=cve

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