AI agent vulnerability · LlamaIndex

CVE-2025-6208: llama-index-core vulnerable to Uncontrolled Resource Consumption

mediumCVSS 3.0 5.3GHSA-488g-hw5f-x29p

The SimpleDirectoryReader component in llamaindex.core version 0.12.23 suffers from uncontrolled memory consumption due to a resource management flaw. The vulnerability arises because the user-specified file limit (numfileslimit) is applied after all files in a directory are loaded into memory. This can lead to memory exhaustion and degraded performance, particularly in environments with limited resources.

Published Feb 2, 2026

Affected packages

llama-index-core

Ecosystem: PyPI
Affected: < 0.12.41
Fixed in: 0.12.41
Check: pip show llama-index-core

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

The SimpleDirectoryReader component in llama_index.core version 0.12.23 suffers from uncontrolled memory consumption due to a resource management flaw. The vulnerability arises because the user-specified file limit (num_files_limit) is applied after all files in a directory are loaded into memory. This can lead to memory exhaustion and degraded performance, particularly in environments with limited resources. The issue is resolved in version 0.12.41.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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