CVE-2025-7647: Llama index core Llama-index-core Insecurely Handles Temporary Files Vulnerability

HIGH
Advisory Identifier: GHSA-cr7q-2w66-hjcm
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CVSS 7.3
CWE-378
Published
Advisory Summary

CVE-2025-7647 is a HIGH (CVSS 7.3) llama-index-core insecurely handles temporary files vulnerability (CWE-378: Creation of Temporary File With Insecure Permissions) affecting Llama index core libraries in the PyPI ecosystem. The issue involves llama-index-core insecurely handles temporary files. Remediation is available by upgrading affected packages to version 0.13.0.

CVE-2025-7647 at a Glance

CVE Identifier CVE-2025-7647
GHSA Identifier GHSA-cr7q-2w66-hjcm
Severity HIGH
CVSS v3.1 Base Score 7.3
CWE Classification CWE-378: Creation of Temporary File With Insecure Permissions
Affected Product Llama index core
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.3

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:H/I:H/A:L).

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 High (C:H)
Integrity High (I:H)
Availability Low (A:L)

How to Fix CVE-2025-7647

To remediate this vulnerability, upgrade all affected Llama index core 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-core fixed: 0.13.0 
pip install llama-index-core>=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-core

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-7647, inspect your installed packages using pip:

pip show llama-index-core

Analyze the terminal output to locate any version of Llama index core 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-core command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-378: Creation of Temporary File With Insecure Permissions, where opening temporary files without appropriate measures or controls can leave the file, its contents and any function that it impacts vulnerable to attack. In Llama index core, 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-core package, up to version 0.12.44, contains a vulnerability in the `get_cache_dir()` function where a predictable, hardcoded directory path `/tmp/llama_index` is used on Linux systems without proper security controls. This vulnerability allows attackers on multi-user systems to steal proprietary models, poison cached embeddings, or conduct symlink attacks. The issue affects all Linux deployments where multiple users share the same system. The vulnerability is classified under CWE-379, CWE-377, and CWE-367, indicating insecure temporary file creation and potential race conditions.

CVE-2025-7647 Affected Llama index core Versions

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

References

NVD — CVE-2025-7647 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-7647
Llama index core Source Repository REPOSITORY
https://github.com/run-llama/llama_index
Security Fix Commit FIX COMMIT
https://github.com/run-llama/llama_index/commit/98816394d57c7f53f847ed7b60725e69d0e7aae4
huntr.com/bounties/a2baa08f-9... WEB
https://huntr.com/bounties/a2baa08f-98bf-47a8-ac83-06f7411afd9e

Frequently Asked Questions

What is CVE-2025-7647?
CVE-2025-7647 is a security vulnerability in Llama index core involving llama-index-core insecurely handles temporary files under CWE-378: Creation of Temporary File With Insecure Permissions.
Which Llama index core versions are affected?
Affected versions include releases prior to 0.13.0 across affected packages: llama-index-core.
What version fixes CVE-2025-7647?
Upgrading to 0.13.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is llama-index-core affected?
Yes, llama-index-core 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-2025-7647?
CVE-2025-7647 has a CVSS v3.1 base score of 7.3 (HIGH) with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
What CWE is associated with CVE-2025-7647?
CVE-2025-7647 is classified under CWE-378: Creation of Temporary File With Insecure Permissions (Opening temporary files without appropriate measures or controls can leave the file, its contents and any function that it impacts vulnerable to attack.).
How can I check PyPI dependencies for CVE-2025-7647?
Run the dependency tree command: 'pip show llama-index-core'. 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-cr7q-2w66-hjcm",
  "modified" : "2025-09-29T18:36:50Z",
  "published" : "2025-09-27T18:30:49Z",
  "aliases" : [ "CVE-2025-7647" ],
  "summary" : "llama-index-core insecurely handles temporary files",
  "details" : "The llama-index-core package, up to version 0.12.44, contains a vulnerability in the `get_cache_dir()` function where a predictable, hardcoded directory path `/tmp/llama_index` is used on Linux systems without proper security controls. This vulnerability allows attackers on multi-user systems to steal proprietary models, poison cached embeddings, or conduct symlink attacks. The issue affects all Linux deployments where multiple users share the same system. The vulnerability is classified under CWE-379, CWE-377, and CWE-367, indicating insecure temporary file creation and potential race conditions.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "llama-index-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
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      }, {
        "fixed" : "0.13.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-7647"
  }, {
    "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/a2baa08f-98bf-47a8-ac83-06f7411afd9e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-378" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-09-29T18:36:50Z",
    "nvd_published_at" : "2025-09-27T17:15:33Z"
  }
}