CVE-2025-66523 json
Reflected Cross-Site Scripting (XSS) Vulnerability in na1.foxitesign.foxit.com via Unsanitized URL Parameters
published 2026-01-20 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-3463
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
URL parameters are directly embedded into JavaScript code or HTML attributes without proper encoding or sanitization. This allows attackers to inject arbitrary scripts when an authenticated user visits a crafted link.
This issue affects na1.foxitesign.foxit.com: before 2026‑01‑16.
Patch / fix
- foxit esign 2026-01-16
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 9 mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Foxit Software Inc. na1.foxitesign.foxit.com
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
foxit.com
/support/security-bulletins.html
vendor-advisory
Sources
- CVE List CVE-2025-66523
- NVD CVE-2025-66523
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.