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LlamaIndex <= 0.11.6 BGEM3Index Unsafe Deserialization

Type: advisorySources: OSV

LlamaIndex (run-llama/llama_index) versions up to and including 0.11.6 contain an unsafe deserialization vulnerability in BGEM3Index.load_from_disk() in llama_index/indices/managed/bge_m3/base.py. The function uses pickle.load() to deserialize multi_embed_store.pkl from a user-supplied persist_dir without validation. An attacker who can provide a crafted persist directory containing a malicious pickle file can trigger arbitrary code execution when the victim loads the index from disk.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2024-14021
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 19:20 UTC · Revision 1

Source evidence

LlamaIndex <= 0.11.6 BGEM3Index Unsafe Deserialization

core-osv · Original source

Published 12 Jan 2026, 23:04 UTC

LlamaIndex (run-llama/llama_index) versions up to and including 0.11.6 contain an unsafe deserialization vulnerability in BGEM3Index.load_from_disk() in llama_index/indices/managed/bge_m3/base.py. The function uses pickle.load() to deserialize multi_embed_store.pkl from a user-supplied persist_dir without validation. An attacker who can provide a crafted persist directory containing a malicious pickle file can trigger arbitrary code execution when the victim loads the index from disk.

osv:CVE-2024-14021
Complete source record
{
  "id": "50e57b41313b157584c075c4480a37119a34071b2b750484a562b394b007e864",
  "url": "https://osv.dev/vulnerability/CVE-2024-14021",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "LlamaIndex <= 0.11.6 BGEM3Index Unsafe Deserialization",
    "summary": "LlamaIndex (run-llama/llama_index) versions up to and including 0.11.6 contain an unsafe deserialization vulnerability in BGEM3Index.load_from_disk() in llama_index/indices/managed/bge_m3/base.py. The function uses pickle.load() to deserialize multi_embed_store.pkl from a user-supplied persist_dir without validation. An attacker who can provide a crafted persist directory containing a malicious pickle file can trigger arbitrary code execution when the victim loads the index from disk.",
    "evidence": "osv:CVE-2024-14021",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-14021",
      "aliases": [
        "CVE-2024-14021",
        "PYSEC-2026-85"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/run-llama/llama_index",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "3c64a1b978c15f9349d5d20644feff50ae0f5849"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.11.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:llamaindex:llamaindex:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.11.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.11.6",
            "v0.11.5",
            "v0.11.4",
            "v0.11.3",
            "v0.11.2",
            "v0.11.1",
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            "v0.10.24",
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            "v0.10.19",
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            "v0.10.13.post1",
            "v0.10.13",
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            "v0.10.11",
            "v0.10.10",
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            "v0.9.48",
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            "v0.9.42.post2",
            "v0.9.42.post1",
            "v0.9.42",
            "v0.9.41",
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            "v0.9.28",
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            "v0.9.17.dev1",
            "v0.9.16.post1",
            "v0.9.15.post2",
            "v0.9.15.post1",
            "v0.9.15",
            "v0.9.14.post3",
            "v0.9.12",
            "v0.9.11.post1",
            "v0.9.10",
            "v0.9.9",
            "v0.9.8.post1",
            "v0.9.8",
            "v0.9.7",
            "v0.9.6.post2",
            "v0.9.6.post1",
            "v0.9.6",
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            "v0.9.3",
            "v0.9.1",
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            "v0.8.38",
            "v0.8.29.post1",
            "v0.8.25",
            "v0.8.11.post3",
            "v0.8.11.post2",
            "v0.8.11.post1",
            "v0.8.10",
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            "v0.8.5.post1",
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            "v0.8.3",
            "v0.8.2.post1",
            "v0.8.2",
            "v0.8.1.post1",
            "v0.7.24.post1",
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            "v0.7.19",
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            "v0.6.3",
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            "v0.4.2",
            "v0.4.1",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-14021.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.780404729Z",
      "provider": "osv",
      "references": [
        "https://www.llamaindex.ai/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/14xxx/CVE-2024-14021.json",
        "https://github.com/run-llama/llama_index",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-14021",
        "https://www.vulncheck.com/advisories/llamaindex-bgem3index-unsafe-deserialization",
        "https://huntr.com/bounties/ab4ceeb4-aa85-4d1c-aaca-4eda1b71fc12"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-502"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/14xxx/CVE-2024-14021.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-14021",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506105,
  "published_at": "2026-01-12T23:04:43.095+00:00"
}