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, allowing an attacker to execute arbitrary JavaScript when a crafted postMessage is received.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
FoxitCNA
6.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 8%
VendorProductVersion
foxitpdf_editor_cloud
𝑥
< 2025-12-01
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.foxit.com/support/security-bulletins.html