CVE-2025-3662

FancyBox for WordPress < 3.3.6 - Unauthenticated Stored XSS

MEDIUM
6.1
CVSS Score
Published: June 3, 2025 at 06:00 AM UTC
Updated: June 17, 2026 at 09:20 AM UTC
1 product affected across 1 vendorFancybox

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fancybox· Colorlibwordpress-plugin
95%
v < 3.3.6
Affected range stops below 3.3.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical DescriptionThird Party Advisory
https://wpscan.com/vulnerability/4cda12f0-3c23-44ad-80ea-db2443ebcf82/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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