Foxit pdfonline.foxit.com Stored Cross-Site Scripting in eSign Predefined Text Feature
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
A stored cross-site scripting (XSS) vulnerability exists in pdfonline.foxit.com within the Predefined Text feature of the Foxit eSign section. A crafted payload can be stored via the Identity “First Name” field, which is later rendered into the DOM without proper sanitization. As a result, the injected script may execute when predefined text is used or when viewing document properties.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Foxit Software Inc. | pdfonline.foxit.com | before 2025‑12‑01 | — | No fix listed | CNA |
- pdfonline.foxit.com VendorFoxit Software Inc. Affected before 2025‑12‑01 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-66501
- 2026-10-03 Alias added: GHSA-wwrp-v67c-phr5
References
More Foxit Software Inc. vulnerabilities
- TI-2011-04633 Foxit PDF Reader < 4.3.1.0218 JavaScript File Write CVSS 4.0HIGH 8.4
- TI-2016-06851 Out-of-bounds read in Foxit Reader CVSS 3.0MEDIUM 6.8
- TI-2018-02932 Use after free in Foxit PDF Reader CVSS 3.1HIGH 7.8
- TI-2018-02965 Use after free in Foxit PDF Reader CVSS 3.1HIGH 8.8
- TI-2018-02964 Use after free in Foxit PDF Reader CVSS 3.1HIGH 8.8
- TI-2018-02962 Use after free in Foxit PDF Reader CVSS 3.1HIGH 8.8
Sources
- CVE-2025-66501 · CVE Program
- CVE-2025-66501 · NVD
- FIRST EPSS
- GHSA-wwrp-v67c-phr5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences