CVEvulnerability
CVE-2026-107764
7.2 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-10-16
- Last modified
- 2026-10-16
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
Description
The SiteOrigin CSS plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'url (comment_author_url)' parameter in all versions up to, and including, 1.6.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because WordPress core's esc_url() preserves HTML entity-encoded characters, allowing a crafted entity-encoded payload in the comment 'Website' field to survive storage and be DOM-decoded by the browser into executable markup at the sink.
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://github.com/siteorigin/so-css/compare/1.6.7...1.6.8 github.com
- https://plugins.trac.wordpress.org/browser/so-css/tags/1.6.6/js/inspector.js#L280 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/so-css/tags/1.6.6/so-css.php#L69 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/so-css/tags/1.6.6/so-css.php#L899 plugins.trac.wordpress.org
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b0ff9652-1b45-43d6-949a-92bfeaee96d3?source=cve www.wordfence.com