CVE-2026-7597 is an improper input validation vulnerability in mem0ai mem0 versions prior to 2.0.0b2. It affects the pickle.load and pickle.dump functions in the mem0/vector_stores/faiss.py file, allowing remote attackers to perform malicious deserialization. A patch is available in version 2.0.0b2 to address this issue. The vulnerability has a medium severity rating with a CVSS score of 6.3.