CVE-2024-46983: Antfin Sofa-Hessian

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

sofa-hessian is an internal improved version of Hessian3/4 powered by Ant Group CO., Ltd. The SOFA Hessian protocol uses a blacklist mechanism to restrict deserialization of potentially dangerous classes for security protection. But there is a gadget chain that can bypass the SOFA Hessian blacklist protection mechanism, and this gadget chain only relies on JDK and does not rely on any third-party components. This issue is fixed by an update to the blacklist, users can upgrade to sofahessian version 3.5.5 to avoid this issue. Users unable to upgrade may maintain a blacklist themselves in the directory `external/serialize.blacklist`.

Affected products

• Antfin Sofa-Hessian: before 3.5.5 (fixed in 3.5.5)

Published 2024-09-19. Last modified 2026-06-17.