CVE-2025-4839: Itwanger Paicoding

High severity, CVSS 8.1. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability has been found in itwanger paicoding 1.0.0/1.0.1/1.0.2/1.0.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /paicoding-core/src/main/java/com/github/paicoding/forum/core/util/CrossUtil.java. The manipulation leads to permissive cross-domain policy with untrusted domains. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

Affected products

• Itwanger Paicoding: version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only

Published 2025-05-17. Last modified 2026-06-17.