The Frndzk Expandable Bottom Bar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'text' parameter in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
CVE ID: CVE-2025-2510
CVSS Base Severity: MEDIUM
CVSS Base Score: 5.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Vendor: bittokazi
Product: Frndzk Expandable Bottom Bar
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 5.64% (scored less or equal to compared to others)
EPSS Date: 2025-04-22 (when was this score calculated)