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Vulnerabilities

Vulnerability · 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.

Published Jun 3, 2025 · catalog updated Jun 3, 2025 · Unknown FancyBox for WordPress

Check if you run it

No confirmed exploitation is on record for CVE-2025-3662. EPSS is 0.25%. Act only if a listed version of Unknown FancyBox for WordPress is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Version ranges on file
Affected products
vendor Unknown FancyBox for WordPress 0 <3.3.6

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Unknown FancyBox for WordPress 0 <3.3.60 <3.3.6

How to fix CVE-2025-3662

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-3662. EPSS is 0.25%. Act only if a listed version of Unknown FancyBox for WordPress is installed.

Which versions are affected?

Compare what you have installed with Unknown FancyBox for WordPress 0 <3.3.6 0 <3.3.6. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 3, 2025 · EUVD

    Detected

    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

  2. Jun 3, 2025 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-3662

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-3662

    30-day exploitation probability 0.2%

    first.org
  • EUVDVulnerability recordEUVD-2025-16698

    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 Unauthentica

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.