CVE-2026-2594 Smart Custom Fields <= 5.0.7 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment Title
Authenticated attackers with Author access can inject arbitrary scripts via attachment titles, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2594?
CVE-2026-2594 is a medium-severity cross-site scripting vulnerability in inc2734 Smart Custom Fields, published on 17 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Smart Custom Fields plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 5.0.7. This is due to insufficient input sanitization and output escaping of uploaded image attachment titles. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. NOTE: This vulnerability was partially patched in 5.0.7.
Weakness: CWE-79
Which versions are affected by CVE-2026-2594?
How do I fix CVE-2026-2594?
No fix has been published for CVE-2026-2594 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-2026-2594 being exploited?
There is no known exploitation of CVE-2026-2594 in the wild and no public exploit code.
Sources
Also known as GHSA-xpfv-qr3c-jw2p.