1. Home
  2. CVE Database
  3. CVE-2025-66500
MEDIUM · 6.3

CVE-2025-66500

A stored cross-site scripting (XSS) vulnerability exists in webplugins.foxit.com. A postMessage handler fails to validate the message origin and directly assigns externalPath to a script source, allow...

Vulnerability Description

A stored cross-site scripting (XSS) vulnerability exists in webplugins.foxit.com. A postMessage handler fails to validate the message origin and directly assigns externalPath to a script source, allowing an attacker to execute arbitrary JavaScript when a crafted postMessage is received.

CVSS Score

6.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
FoxitPdf Editor Cloud< 2025-12-01

Related Weaknesses (CWE)

CWE-79

References

FAQ

What is CVE-2025-66500?

CVE-2025-66500 is a vulnerability with a CVSS score of 6.3 (MEDIUM). A stored cross-site scripting (XSS) vulnerability exists in webplugins.foxit.com. A postMessage handler fails to validate the message origin and directly assigns externalPath to a script source, allow...

How severe is CVE-2025-66500?

CVE-2025-66500 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-66500?

Check the references section above for vendor advisories and patch information. Affected products include: Foxit Pdf Editor Cloud.