CVE-2025-66500

medium

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.

References

https://hackread.com/zero-day-flaws-pdf-platforms-xss-one-click-attacks/

https://www.foxit.com/support/security-bulletins.html

Details

Source: Mitre, NVD

Published: 2025-12-19

Updated: 2025-12-23

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00032