CVE-2026-3778 PUBLISHED

Stack exhaustion caused by cyclic references in Foxit PDF Editor/Reader

Assigner: Foxit
Reserved: 08.03.2026 Published: 01.04.2026 Updated: 01.04.2026

The application does not detect or guard against cyclic PDF object references while handling JavaScript in PDF. When pages and annotations are crafted that reference each other in a loop, passing the document to APIs (e.g., SOAP) that perform deep traversal can cause uncontrolled recursion, stack exhaustion, and application crashes.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.2

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Foxit Software Inc.
Product	Foxit PDF Editor
Versions	Default: unaffected Version Versions 2025.3 and earlier is affected Version Versions 14.0.2 and earlier is affected Version Versions 13.2.2 and earlier is affected

Vendor	Foxit Software Inc.
Product	Foxit PDF Reader
Versions	Default: unaffected Version Versions 2025.3 and earlier is affected

References

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

Problem Types

CWE-674: Uncontrolled Recursion CWE

Impacts

Stack overflow