CVE-2025-6210: Llama index readers obsidian Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-3j8r-jf9w-5cmh
Share
CVSS 6.2
CWE-22
Published
Advisory Summary

CVE-2025-6210 is a MODERATE (CVSS 6.2) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Llama index readers obsidian libraries in the PyPI ecosystem. The issue involves llamaindex vulnerability in its obsidianreader class can lead to path traversal exploit. Remediation is available by upgrading affected packages to version 0.5.2.

CVE-2025-6210 at a Glance

CVE Identifier CVE-2025-6210
GHSA Identifier GHSA-3j8r-jf9w-5cmh
Severity MODERATE
CVSS v3.1 Base Score 6.2
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Llama index readers obsidian
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.2

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

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

How to Fix CVE-2025-6210

To remediate this vulnerability, upgrade all affected Llama index readers obsidian 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-readers-obsidian fixed: 0.5.2 
pip install llama-index-readers-obsidian>=0.5.2
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-readers-obsidian

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-6210, inspect your installed packages using pip:

pip show llama-index-readers-obsidian

Analyze the terminal output to locate any version of Llama index readers obsidian in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.5.2), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Llama index readers obsidian, 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

A vulnerability in the ObsidianReader class of the run-llama/llama_index repository, before version 0.5.2 (specifically in version 0.12.27 of llama-index), allows for hardlink-based path traversal. This flaw permits attackers to bypass path restrictions and access sensitive system files, such as /etc/passwd, by exploiting hardlinks. The vulnerability arises from inadequate handling of hardlinks in the load_data() method, where the security checks fail to differentiate between real files and hardlinks. This issue is resolved in llama-index-readers-obsidian version 0.5.2.

CVE-2025-6210 Affected Llama index readers obsidian Versions

1 component(s)
Fixed Versions:
0.5.2
Product / Package Ecosystem Affected Versions Fixed Version
llama-index-readers-obsidian
pypi/llama-index-readers-obsidian
PyPI
< 0.5.2
0.5.2

References

NVD — CVE-2025-6210 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-6210
Security Fix Commit FIX COMMIT
https://github.com/run-llama/llama_index/commit/a86c96ae0e662492eeb471b658ae849a93f628ff
Llama index readers obsidian Source Repository REPOSITORY
https://github.com/run-llama/llama_index
huntr.com/bounties/a654b322-a... WEB
https://huntr.com/bounties/a654b322-a509-4448-a1f5-0f22850b4687

Frequently Asked Questions

What is CVE-2025-6210?
CVE-2025-6210 is a security vulnerability in Llama index readers obsidian involving LlamaIndex vulnerability in its ObsidianReader class can lead to Path Traversal exploit under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Llama index readers obsidian versions are affected?
Affected versions include releases prior to 0.5.2 across affected packages: llama-index-readers-obsidian.
What version fixes CVE-2025-6210?
Upgrading to 0.5.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is llama-index-readers-obsidian affected?
Yes, llama-index-readers-obsidian is affected in releases prior to 0.5.2. Upgrade your dependency to 0.5.2 or later.
What is the CVSS score of CVE-2025-6210?
CVE-2025-6210 has a CVSS v3.1 base score of 6.2 (MODERATE) with vector string CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2025-6210?
CVE-2025-6210 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check PyPI dependencies for CVE-2025-6210?
Run the dependency tree command: 'pip show llama-index-readers-obsidian'. 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-3j8r-jf9w-5cmh",
  "modified" : "2025-07-08T18:15:37Z",
  "published" : "2025-07-07T12:30:23Z",
  "aliases" : [ "CVE-2025-6210" ],
  "summary" : "LlamaIndex vulnerability in its ObsidianReader class can lead to Path Traversal exploit",
  "details" : "A vulnerability in the ObsidianReader class of the run-llama/llama_index repository, before version 0.5.2 (specifically in version 0.12.27 of llama-index), allows for hardlink-based path traversal. This flaw permits attackers to bypass path restrictions and access sensitive system files, such as /etc/passwd, by exploiting hardlinks. The vulnerability arises from inadequate handling of hardlinks in the load_data() method, where the security checks fail to differentiate between real files and hardlinks. This issue is resolved in llama-index-readers-obsidian version 0.5.2.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "llama-index-readers-obsidian"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.5.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-6210"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/run-llama/llama_index/commit/a86c96ae0e662492eeb471b658ae849a93f628ff"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/run-llama/llama_index"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/a654b322-a509-4448-a1f5-0f22850b4687"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-07-08T18:15:37Z",
    "nvd_published_at" : "2025-07-07T10:15:29Z"
  }
}