PYSEC-2025-252

Vulnerability from pysec - Published: 2025-07-07 10:15 - Updated: 2026-07-13 05:49
VLAI
Details

A vulnerability in the ObsidianReader class of the run-llama/llama_index repository, specifically in version 0.12.27, 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 version 0.5.2.

Severity
6.2 (Medium)
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Impacted products
Name purl
llama-index pkg:pypi/llama-index
Aliases
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "llama-index",
        "purl": "pkg:pypi/llama-index"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.10",
        "0.4.11",
        "0.4.12",
        "0.4.13",
        "0.4.14",
        "0.4.15",
        "0.4.16",
        "0.4.17",
        "0.4.18",
        "0.4.19",
        "0.4.20",
        "0.4.21",
        "0.4.22",
        "0.4.22.post1",
        "0.4.23",
        "0.4.24",
        "0.4.25",
        "0.4.26",
        "0.4.27",
        "0.4.28",
        "0.4.29",
        "0.4.30",
        "0.4.31",
        "0.4.32",
        "0.4.33",
        "0.4.34",
        "0.4.35",
        "0.4.35.post1",
        "0.4.36",
        "0.4.37",
        "0.4.38",
        "0.4.39",
        "0.4.4",
        "0.4.4.post1",
        "0.4.4.post2",
        "0.4.40",
        "0.4.5",
        "0.4.6",
        "0.4.7",
        "0.4.8",
        "0.4.9",
        "0.5.0",
        "0.5.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-6210"
  ],
  "details": "A vulnerability in the ObsidianReader class of the run-llama/llama_index repository, specifically in version 0.12.27, 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 version 0.5.2.",
  "id": "PYSEC-2025-252",
  "modified": "2026-07-13T05:49:41.236465Z",
  "published": "2025-07-07T10:15:29.040Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/run-llama/llama_index/commit/a86c96ae0e662492eeb471b658ae849a93f628ff"
    },
    {
      "type": "EVIDENCE",
      "url": "https://huntr.com/bounties/a654b322-a509-4448-a1f5-0f22850b4687"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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