Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| run-llama | llama_index | ≤ 0.11.6 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | llama-index | < 0.11.7 | 0.11.7 | PYSEC-2026-85 |
References
- https://huntr.com/bounties/ab4ceeb4-aa85-4d1c-aaca-4eda1b71fc12 technical-description exploit
- https://www.llamaindex.ai/ product
- https://github.com/run-llama/llama_index third-party-advisory
- https://www.vulncheck.com/advisories/llamaindex-bgem3index-unsafe-deserialization third-party-advisory