Vulnerability Details CVE-2025-3108
A critical deserialization vulnerability exists in the run-llama/llama_index library's JsonPickleSerializer component, affecting versions v0.12.27 through v0.12.40. This vulnerability allows remote code execution due to an insecure fallback to Python's pickle module. JsonPickleSerializer prioritizes deserialization using pickle.loads(), which can execute arbitrary code when processing untrusted data. Attackers can exploit this by crafting malicious payloads to achieve full system compromise. The root cause includes an insecure fallback mechanism, lack of validation or safeguards, misleading design, and violation of Python security guidelines.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 43.6%
CVSS Severity
CVSS v3 Score 5.0
References
Products affected by CVE-2025-3108
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cpe:2.3:a:llamaindex:llamaindex:*