What’s Vulnerable › Vulnerabilities

CVE-2026-2358: WP ULike <= 5.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-11 · updated 2026-06-17
• Weakness: CWE-79

Description

The WP ULike plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `[wp_ulike_likers_box]` shortcode `template` attribute in all versions up to, and including, 5.0.1. This is due to the use of `html_entity_decode()` on shortcode attributes without subsequent output sanitization, which effectively bypasses WordPress's `wp_kses_post()` content filtering. 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. The post must have at least one like for the XSS to render.

Affected products

• alimir WP ULike – Like & Dislike Buttons for Engagement and Feedback: through 5.0.1

References

• https://github.com/Alimir/wp-ulike/commit/3dcce696ea251b3733448332cc167e03b2a17c12
• https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/functions/general.php#L375
• https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/functions/utilities.php#L226
• https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/functions/utilities.php#L251
• https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/hooks/shortcodes.php#L209
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3475381%40wp-ulike%2Ftrunk&old=3457255%40wp-ulike%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/74a7db23-f91c-452b-bc24-58fda69caf17?source=cve

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