Vulnerability · Published Apr 1, 2026 · Assigned by Foxit
CVE-2026-3778Stack exhaustion caused by cyclic references in Foxit PDF Editor/Reader
Medium 6.2
In plain English
A medium-severity security flaw in Foxit PDF Editor from Foxit Software Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.1%top 98.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Foxit Software Inc. | Foxit PDF Editor | Versions 2025.3 and earlierVersions 14.0.2 and earlierVersions 13.2.2 and earlier |
| Foxit Software Inc. | Foxit PDF Reader | Versions 2025.3 and earlier |
Weakness: CWE-674 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H