Vulnerability · Published Feb 14, 2026 · Assigned by Wordfence
CVE-2026-1910UpMenu <= 3.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'upmenu-menu' Shortcode 'lang' Attribute
Medium 6.4
In plain English
A medium-severity cross-site scripting in UpMenu – Online ordering for restaurants from upmenu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Official description
The UpMenu – Online ordering for restaurants plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'lang' attribute of the 'upmenu-menu' shortcode in all versions up to, and including, 3.1. This is due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| upmenu | UpMenu – Online ordering for restaurants | 0 – through 3.1 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N