CVE-2026-4085 Cross-site scripting in Easy Social Photos Gallery – MIF
Authenticated contributors can inject arbitrary scripts via shortcode attributes, 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-2026-4085?
CVE-2026-4085 is a medium-severity cross-site scripting vulnerability in maltathemes Easy Social Photos Gallery – MIF, published on 22 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Easy Social Photos Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wrapper_class' shortcode attribute of the 'my-instagram-feed' shortcode in all versions up to, and including, 3.1.2. This is due to insufficient input sanitization and output escaping on user supplied attributes. Specifically, the plugin uses sanitize_text_field() instead of esc_attr() when outputting the 'wrapper_class' attribute inside a double-quoted HTML class attribute. Since sanitize_text_field() does not encode double quotes, an attacker can break out of the class attribute and inject arbitrary HTML event handlers. 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-4085?
How do I fix CVE-2026-4085?
No fix has been published for CVE-2026-4085 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-2026-4085 being exploited?
There is no known exploitation of CVE-2026-4085 in the wild and no public exploit code.
Sources
Also known as GHSA-f34c-54gc-hh3w.