CVE-2026-7430 Post Snippets <= 4.0.19 - Authenticated (Administrator+) Stored Cross-Site Scripting via Import
Administrators can inject arbitrary scripts via malicious import files, executing code in other administrators' browsers when accessing post editors.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7430?
CVE-2026-7430 is a medium-severity cross-site scripting vulnerability in saadiqbal Post Snippets – Custom WordPress Code Snippets Customizer, published on 29 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Post Snippets plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 4.0.19. This is due to insufficient output escaping of imported snippet content when rendering JavaScript variables in the post editor. Specifically, the `jqueryUiDialog()` method in `WPEditor.php` embeds snippet content directly into JavaScript string literals without escaping double quotes (the quote-escaping code on line 214 is commented out). When snippets are imported via the Import/Export feature, the content bypasses WordPress's `wp_magic_quotes()` (which would otherwise add protective backslashes), allowing double quotes in snippet content to break out of the JavaScript string context. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts via a malicious import file that execute whenever any administrator accesses a post editor page. Please note that this does not affect single-site installations as administrators already have the `unfiltered_html` capability.
Weakness: CWE-79
Which versions are affected by CVE-2026-7430?
How do I fix CVE-2026-7430?
No fix has been published for CVE-2026-7430 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-7430 being exploited?
There is no known exploitation of CVE-2026-7430 in the wild and no public exploit code.
Sources
Also known as GHSA-8v38-ppcg-cmjm.