FKIE_CVE-2026-34070

Vulnerability from fkie_nvd - Published: 2026-03-31 03:15 - Updated: 2026-08-25 13:18
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchain_core.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an application passes user-influenced prompt configurations to load_prompt() or load_prompt_from_config(), an attacker can read arbitrary files on the host filesystem, constrained only by file-extension checks (.txt for templates, .json/.yaml for examples). This issue has been patched in version 1.2.22.
References
security-advisories@github.comhttps://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47cPatch
security-advisories@github.comhttps://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22Release Notes
security-advisories@github.comhttps://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54Exploit, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:24766
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:37275
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:59159
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-34070
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2453287
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54Exploit, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34070.json
Impacted products
Vendor Product Version
langchain langchain_core *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "langchain",
          "vendor": "langchain-ai",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.22"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    },
    {
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          "cpes": [
            "cpe:/a:redhat:ansible_automation_platform:2.5::el8"
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          "defaultStatus": "affected",
          "packageName": "ansible-automation-platform-25/lightspeed-rhel8",
          "product": "Red Hat Ansible Automation Platform 2.5",
          "vendor": "Red Hat",
          "versions": [
            {
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              "status": "unaffected",
              "version": "1780082949",
              "versionType": "rpm"
            },
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "1787229385",
              "versionType": "rpm"
            }
          ]
        },
        {
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          "cpes": [
            "cpe:/a:redhat:openshift_ai:3.3::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "rhoai/odh-llama-stack-core-rhel9",
          "product": "Red Hat OpenShift AI 3.3",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "1782471587",
              "versionType": "rpm"
            }
          ]
        },
        {
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          "cpes": [
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          ],
          "defaultStatus": "affected",
          "packageName": "rhoai/odh-trustyai-nemo-guardrails-server-rhel9",
          "product": "Red Hat OpenShift AI 3.3",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "1782471606",
              "versionType": "rpm"
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          ]
        },
        {
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          "cpes": [
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          "defaultStatus": "affected",
          "packageName": "openshift-lightspeed/lightspeed-service-api-rhel9",
          "product": "OpenShift Lightspeed",
          "vendor": "Red Hat"
        },
        {
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          "cpes": [
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          "defaultStatus": "affected",
          "packageName": "ansible-automation-platform-25/lightspeed-chatbot-rhel8",
          "product": "Red Hat Ansible Automation Platform 2",
          "vendor": "Red Hat"
        },
        {
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          "cpes": [
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          "defaultStatus": "affected",
          "packageName": "ansible-automation-platform-26/lightspeed-rhel9",
          "product": "Red Hat Ansible Automation Platform 2",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_ai"
          ],
          "defaultStatus": "unaffected",
          "packageName": "rhoai/odh-mlflow-rhel9",
          "product": "Red Hat OpenShift AI (RHOAI)",
          "vendor": "Red Hat"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:langchain:langchain_core:*:*:*:*:*:python:*:*",
              "matchCriteriaId": "2ABD029B-592B-4C63-A280-09F190C3587A",
              "versionEndExcluding": "1.2.22",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchain_core.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an application passes user-influenced prompt configurations to load_prompt() or load_prompt_from_config(), an attacker can read arbitrary files on the host filesystem, constrained only by file-extension checks (.txt for templates, .json/.yaml for examples). This issue has been patched in version 1.2.22."
    },
    {
      "lang": "es",
      "value": "LangChain es un framework para construir agentes y aplicaciones impulsadas por LLM. Antes de la versi\u00f3n 1.2.22, m\u00faltiples funciones en langchain_core.prompts.loading le\u00edan archivos de rutas incrustadas en diccionarios de configuraci\u00f3n deserializados sin validar contra salto de directorio o inyecci\u00f3n de ruta absoluta. Cuando una aplicaci\u00f3n pasa configuraciones de prompt influenciadas por el usuario a load_prompt() o load_prompt_from_config(), un atacante puede leer archivos arbitrarios en el sistema de archivos del host, restringido solo por verificaciones de extensi\u00f3n de archivo (.txt para plantillas, .json/.yaml para ejemplos). Este problema ha sido parcheado en la versi\u00f3n 1.2.22."
    }
  ],
  "id": "CVE-2026-34070",
  "lastModified": "2026-08-25T13:18:38.963",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
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        "impactScore": 3.6,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-03-31T15:17:33.597003Z",
          "version": "2.0.3"
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  "published": "2026-03-31T03:15:58.947",
  "references": [
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      "tags": [
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  "vulnStatus": "Modified",
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}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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