CVE-2025-7707: Llama index Llama-index Has Insecure Temporary File Vulnerability

HIGH
Advisory Identifier: GHSA-rg9h-vx28-xxp5
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CVSS 7.1
CWE-377
Published
Advisory Summary

CVE-2025-7707 is a HIGH (CVSS 7.1) llama-index has insecure temporary file vulnerability (CWE-377: Insecure Temporary File) affecting Llama index libraries in the PyPI ecosystem. The issue involves llama-index has insecure temporary file. Remediation is available by upgrading affected packages to version 0.13.0.

CVE-2025-7707 at a Glance

CVE Identifier CVE-2025-7707
GHSA Identifier GHSA-rg9h-vx28-xxp5
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-377: Insecure Temporary File
Affected Product Llama index
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2025-7707

To remediate this vulnerability, upgrade all affected Llama index dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

llama-index fixed: 0.13.0 
pip install llama-index>=0.13.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show llama-index

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-7707, inspect your installed packages using pip:

pip show llama-index

Analyze the terminal output to locate any version of Llama index in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.13.0), your application is affected.

Note: The pip show llama-index command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-377: Insecure Temporary File, where creating and using insecure temporary files can leave application and system data vulnerable to attack. In Llama index, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-7707 Affected Llama index Versions

1 component(s)
Fixed Versions:
0.13.0
Product / Package Ecosystem Affected Versions Fixed Version
llama-index
pypi/llama-index
PyPI
< 0.13.0
0.13.0

References

NVD — CVE-2025-7707 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-7707
Security Fix Commit FIX COMMIT
https://github.com/run-llama/llama_index/commit/98816394d57c7f53f847ed7b60725e69d0e7aae4
Llama index Source Repository REPOSITORY
https://github.com/run-llama/llama_index
huntr.com/bounties/3fe2c8ab-6... WEB
https://huntr.com/bounties/3fe2c8ab-6727-4aef-a0ef-4d2818e48803

Frequently Asked Questions

What is CVE-2025-7707?
CVE-2025-7707 is a security vulnerability in Llama index involving llama-index has Insecure Temporary File under CWE-377: Insecure Temporary File.
Which Llama index versions are affected?
Affected versions include releases prior to 0.13.0 across affected packages: llama-index.
What version fixes CVE-2025-7707?
Upgrading to 0.13.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is llama-index affected?
Yes, llama-index is affected in releases prior to 0.13.0. Upgrade your dependency to 0.13.0 or later.
What is the CVSS score of CVE-2025-7707?
CVE-2025-7707 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
What CWE is associated with CVE-2025-7707?
CVE-2025-7707 is classified under CWE-377: Insecure Temporary File (Creating and using insecure temporary files can leave application and system data vulnerable to attack.).
How can I check PyPI dependencies for CVE-2025-7707?
Run the dependency tree command: 'pip show llama-index'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rg9h-vx28-xxp5",
  "modified" : "2025-10-13T21:02:28Z",
  "published" : "2025-10-13T18:31:13Z",
  "aliases" : [ "CVE-2025-7707" ],
  "summary" : "llama-index has Insecure Temporary File",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "llama-index"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.13.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-7707"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/run-llama/llama_index/commit/98816394d57c7f53f847ed7b60725e69d0e7aae4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/run-llama/llama_index"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/3fe2c8ab-6727-4aef-a0ef-4d2818e48803"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-377" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-13T21:02:28Z",
    "nvd_published_at" : "2025-10-13T17:15:35Z"
  }
}