PYSEC-2026-380

Vulnerability from pysec - Published: 2026-06-29 11:50 - Updated: 2026-06-29 12:05
VLAI
Details

Langflow versions prior to 1.3.0 are susceptible to code injection in the /api/v1/validate/code endpoint. A remote and unauthenticated attacker can send crafted HTTP requests to execute arbitrary code.

Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A
Impacted products
Name purl
langflow-base
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "langflow-base"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.13",
        "0.0.14",
        "0.0.15",
        "0.0.16",
        "0.0.17",
        "0.0.18",
        "0.0.19",
        "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",
        "0.0.30",
        "0.0.31",
        "0.0.32",
        "0.0.33",
        "0.0.34",
        "0.0.35",
        "0.0.36",
        "0.0.37",
        "0.0.38",
        "0.0.39",
        "0.0.40",
        "0.0.41",
        "0.0.42",
        "0.0.43",
        "0.0.44",
        "0.0.45",
        "0.0.46",
        "0.0.47",
        "0.0.48",
        "0.0.49",
        "0.0.50",
        "0.0.51",
        "0.0.52",
        "0.0.53",
        "0.0.54",
        "0.0.55",
        "0.0.56",
        "0.0.57",
        "0.0.58",
        "0.0.59",
        "0.0.60",
        "0.0.61",
        "0.0.62",
        "0.0.63",
        "0.0.64",
        "0.0.66",
        "0.0.67",
        "0.0.68",
        "0.0.69",
        "0.0.70",
        "0.0.71",
        "0.0.72",
        "0.0.73",
        "0.0.74",
        "0.0.75",
        "0.0.76",
        "0.0.77",
        "0.0.78",
        "0.0.79",
        "0.0.80",
        "0.0.81",
        "0.0.82",
        "0.0.83",
        "0.0.84",
        "0.0.85",
        "0.0.86",
        "0.0.87",
        "0.0.88",
        "0.0.89",
        "0.0.90",
        "0.0.91",
        "0.0.92",
        "0.0.93",
        "0.0.94",
        "0.0.95",
        "0.0.96",
        "0.0.97",
        "0.0.98",
        "0.0.99",
        "0.1.0",
        "0.1.1",
        "0.1.2",
        "0.1.3",
        "0.1.4",
        "0.1.4.post1",
        "0.2.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-3248",
    "GHSA-rvqx-wpfh-mfx7"
  ],
  "details": "Langflow versions prior to 1.3.0 are susceptible to code injection in the /api/v1/validate/code endpoint. A remote and unauthenticated attacker can send crafted HTTP requests to execute arbitrary code.",
  "id": "PYSEC-2026-380",
  "modified": "2026-06-29T12:05:31.890093Z",
  "published": "2026-06-29T11:50:38.282690Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-rvqx-wpfh-mfx7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-3248"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langflow-ai/langflow/pull/6911"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langflow-ai/langflow/commit/faac4db133de32fcb6d483fa9ff52f40ce42bdc0"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/langflow-ai/langflow"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langflow-ai/langflow/releases/tag/1.3.0"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248"
    },
    {
      "type": "WEB",
      "url": "https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/langflow-unauthenticated-rce"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/langflow-base"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-rvqx-wpfh-mfx7"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Langflow Unauth RCE"
}


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


Detection rules are retrieved from Rulezet.