CVE-2026-123653 is a medium severity vulnerability in esengine DeepSeek-Reasonix up to version 2.52.0. It affects the discoverDocs function in the internal/memory/doc.go file, where improper neutralization of input used for large language model (LLM) prompting occurs. This flaw can be exploited remotely and has publicly disclosed exploit details. Upgrading to version 2.53.0 addresses the issue.