The Simple Lightbox WordPress plugin before 2.9.4 does not validate and escape some of its attributes before outputting them back in a page/post, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
CVE ID: CVE-2025-3516
CVSS Base Severity: MEDIUM
CVSS Base Score: 5.9
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Vendor: Unknown
Product: Simple Lightbox
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 7.4% (scored less or equal to compared to others)
EPSS Date: 2025-06-07 (when was this score calculated)