HIGH7.8

PYSEC-2026-85

Quick fix

PYSEC-2026-85 — llama-index: upgrade to the fixed version with the command below.

pip install --upgrade 'llama-index>=0.11.7'

Details

LlamaIndex (run-llama/llama_index) versions up to and including 0.11.6 contain an unsafe deserialization vulnerability in BGEM3Index.load_from_disk() in llama_index/indices/managed/bge_m3/base.py. The function uses pickle.load() to deserialize multi_embed_store.pkl from a user-supplied persist_dir without validation. An attacker who can provide a crafted persist directory containing a malicious pickle file can trigger arbitrary code execution when the victim loads the index from disk.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/llama-index

Introduced in: 0Fixed in: 0.11.7

Fixpip install --upgrade 'llama-index>=0.11.7'

References

https://www.llamaindex.ai/[WEB]
https://www.vulncheck.com/advisories/llamaindex-bgem3index-unsafe-deserialization[ADVISORY]
https://github.com/run-llama/llama_index[PACKAGE]
https://huntr.com/bounties/ab4ceeb4-aa85-4d1c-aaca-4eda1b71fc12[EVIDENCE]