PYSEC-2026-2606 LlamaIndex vulnerable to data loss through hash collisions in its DocugamiReader class

A vulnerability in the DocugamiReader class of the run-llama/llamaindex repository, up to but excluding version 0.12.41, involves the use of MD5 hashing to generate IDs for document chunks. This approach leads to hash collisions when structurally distinct chunks contain identical text, resulting ...

Expected Behavior Violation

Overview llama-index is an Interface between LLMs and your data Affected versions of this package are vulnerable to Expected Behavior Violation via the DocugamiReader class. An attacker can cause loss of important document content, disrupt parent-child chunk hierarchies, and lead to inaccurate AI...