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llama-index has Insecure Temporary File

High severity GitHub Reviewed Published Oct 13, 2025 to the GitHub Advisory Database • Updated Oct 13, 2025

Package

pip llama-index (pip)

Affected versions

< 0.13.0

Patched versions

0.13.0

Description

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

Published by the National Vulnerability Database Oct 13, 2025
Published to the GitHub Advisory Database Oct 13, 2025
Reviewed Oct 13, 2025
Last updated Oct 13, 2025

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS score

Weaknesses

Insecure Temporary File

Creating and using insecure temporary files can leave application and system data vulnerable to attack. Learn more on MITRE.

CVE ID

CVE-2025-7707

GHSA ID

GHSA-rg9h-vx28-xxp5

Source code

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