AI agent vulnerability · LlamaIndex

CVE-2025-7707: llama-index has Insecure Temporary File

highCVSS 3.0 7.1GHSA-rg9h-vx28-xxp5

The llamaindex library version 0.12.33 sets the NLTK data directory to a subdirectory of the codebase by default, which is world-writable in multi-user environments. This configuration allows local users to overwrite, delete, or corrupt NLTK data files, leading to potential denial of service, data tampering, or privilege escalation.

Published Oct 13, 2025

Affected packages

llama-index

Ecosystem: PyPI
Affected: < 0.13.0
Fixed in: 0.13.0
Check: pip show llama-index

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

The llama_index library version 0.12.33 sets the NLTK data directory to a subdirectory of the codebase by default, which is world-writable in multi-user environments. This configuration allows local users to overwrite, delete, or corrupt NLTK data files, leading to potential denial of service, data tampering, or privilege escalation. The vulnerability arises from the use of a shared cache directory instead of a user-specific one, making it susceptible to local data tampering and denial of service.

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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