An out-of-memory (OOM) issue in foxinmy/weixin4j

The weixin4j library can run out of memory due to improper handling of sequential memory allocation in its utility modules. This can cause applications using this library to crash or become unresponsive.

An improperly controlled sequential memory allocation vulnerability exists in the CharArrayBuffer and ClassUtil components of weixin4j-base, allowing unbounded memory consumption that can trigger out-of-memory (OOM) conditions. Exploitation requires sending crafted input that triggers excessive memory allocation; impact includes denial of service through application crash or resource exhaustion.