Cyclic PDF Object References Vulnerability in Foxit PDF Reader
CVE-2026-3778

6.2MEDIUM

Key Information:

Vendor

Foxit Inc.

Status
Foxit PDF Editor
Foxit
Vendor
CVE Published:
1 April 2026

What is CVE-2026-3778?

The vulnerability arises from the application’s failure to detect cyclic references in PDF object structures during JavaScript processing. When malformed PDFs are created with looping references, it can trigger deep traversals through the document's structure via APIs, such as SOAP. This leads to severe consequences, including stack exhaustion and potential crashes of the application, impacting user experience and document accessibility.

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Affected Version(s)

Foxit PDF Editor Windows Versions 2025.3 and earlier

Foxit PDF Editor Windows Versions 14.0.2 and earlier

Foxit PDF Editor Windows Versions 13.2.2 and earlier

References

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

CVSS V3.1

Score:
6.2
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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