PYSEC-2026-1514

Vulnerability from pysec - Published: 2026-07-07 14:34 - Updated: 2026-07-07 17:24
VLAI
Details

A vulnerability in the FAISS.deserialize_from_bytes function of langchain-ai/langchain allows for pickle deserialization of untrusted data. This can lead to the execution of arbitrary commands via the os.system function. The issue affects versions prior to 0.2.4.

Severity
5.2 (Medium)
CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
8.4 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Impacted products
Name purl
langchain-community pkg:pypi/langchain-community
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "langchain-community",
        "purl": "pkg:pypi/langchain-community"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.1",
        "0.0.10",
        "0.0.11",
        "0.0.12",
        "0.0.13",
        "0.0.14",
        "0.0.15",
        "0.0.16",
        "0.0.17",
        "0.0.18",
        "0.0.19",
        "0.0.1rc1",
        "0.0.1rc2",
        "0.0.2",
        "0.0.20",
        "0.0.21",
        "0.0.22",
        "0.0.23",
        "0.0.24",
        "0.0.25",
        "0.0.26",
        "0.0.27",
        "0.0.28",
        "0.0.29",
        "0.0.3",
        "0.0.30",
        "0.0.31",
        "0.0.32",
        "0.0.33",
        "0.0.34",
        "0.0.35",
        "0.0.36",
        "0.0.37",
        "0.0.38",
        "0.0.4",
        "0.0.5",
        "0.0.6",
        "0.0.7",
        "0.0.8",
        "0.0.9",
        "0.2.0",
        "0.2.0rc1",
        "0.2.1",
        "0.2.2",
        "0.2.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-5998",
    "GHSA-f2jm-rw3h-6phg"
  ],
  "details": "A vulnerability in the `FAISS.deserialize_from_bytes` function of langchain-ai/langchain allows for pickle deserialization of untrusted data. This can lead to the execution of arbitrary commands via the `os.system` function. The issue affects versions prior to 0.2.4.",
  "id": "PYSEC-2026-1514",
  "modified": "2026-07-07T17:24:27.244384Z",
  "published": "2026-07-07T14:34:41.419579Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-5998"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchain/commit/604dfe2d99246b0c09f047c604f0c63eafba31e7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchain/commit/77209f315efd13442ec51c67719ba37dfaa44511"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/langchain-ai/langchain"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/fa3a2753-57c3-4e08-a176-d7a3ffda28fe"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/langchain-community"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-f2jm-rw3h-6phg"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "LangChain pickle deserialization of untrusted data"
}



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