CVE-2025-3662

The FancyBox for WordPress plugin before 3.3.6 does not escape captions and titles attributes before using them to populate galleries' caption fields. The issue was received as a Contributor+ Stored XSS, however one of our researcher (Marc Montpas) escalated it to an Unauthenticated Stored XSS
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
WPScanCNA
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CISA-ADPADP
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 12%
VendorProductVersion
colorlibfancybox
𝑥
< 3.3.6
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://wpscan.com/vulnerability/4cda12f0-3c23-44ad-80ea-db2443ebcf82/
https://wpscan.com/vulnerability/4cda12f0-3c23-44ad-80ea-db2443ebcf82/