MEDIUM5.3

PYSEC-2026-1560

llama-index-core vulnerable to Uncontrolled Resource Consumption

Quick fix

PYSEC-2026-1560 — llama-index-core: upgrade to the fixed version with the command below.

pip install --upgrade 'llama-index-core>=0.12.41'

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/llama-index-core

Introduced in: 0Fixed in: 0.12.41

Fixpip install --upgrade 'llama-index-core>=0.12.41'

References

https://nvd.nist.gov/vuln/detail/CVE-2025-6208[ADVISORY]
https://github.com/run-llama/llama_index/commit/53614e2f7913c0e86b58add9470b3c900b6c60b2[WEB]
https://github.com/run-llama/llama_index[PACKAGE]
https://huntr.com/bounties/7d722bb6-6567-4608-8b23-f95048d7605a[WEB]
https://pypi.org/project/llama-index-core[PACKAGE]
https://github.com/advisories/GHSA-488g-hw5f-x29p[ADVISORY]