CVE-2026-34070 (GCVE-0-2026-34070)

Vulnerability from cvelistv5 – Published: 2026-03-31 02:01 – Updated: 2026-08-25 12:05
VLAI
Title
LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-31 15:17 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7886 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
langchain-ai langchain Affected: < 1.2.22
guessed Create a notification for this product.
Red Hat Red Hat Ansible Automation Platform 2.5 Unaffected: 1780082949 , < * (rpm)
Unaffected: 1787229385 , < * (rpm)
    cpe:/a:redhat:ansible_automation_platform:2.5::el8
Create a notification for this product.
Red Hat Red Hat OpenShift AI 3.3 Unaffected: 1782471587 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.3::el9
Create a notification for this product.
Red Hat Red Hat OpenShift AI 3.3 Unaffected: 1782471606 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.3::el9
Create a notification for this product.
Red Hat OpenShift Lightspeed     cpe:/a:redhat:openshift_lightspeed
Create a notification for this product.
Red Hat Red Hat Ansible Automation Platform 2     cpe:/a:redhat:ansible_automation_platform:2
Create a notification for this product.
Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34070",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T15:17:33.597003Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-31T18:04:59.283Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "collectionURL": "https://catalog.redhat.com/software/containers/",
            "cpes": [
              "cpe:/a:redhat:ansible_automation_platform:2.5::el8"
            ],
            "defaultStatus": "affected",
            "packageName": "ansible-automation-platform-25/lightspeed-rhel8",
            "product": "Red Hat Ansible Automation Platform 2.5",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "1780082949",
                "versionType": "rpm"
              },
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "1787229385",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://catalog.redhat.com/software/containers/",
            "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"
              }
            ]
          },
          {
            "collectionURL": "https://catalog.redhat.com/software/containers/",
            "cpes": [
              "cpe:/a:redhat:openshift_ai:3.3::el9"
            ],
            "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"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_lightspeed"
            ],
            "defaultStatus": "affected",
            "packageName": "openshift-lightspeed/lightspeed-service-api-rhel9",
            "product": "OpenShift Lightspeed",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:ansible_automation_platform:2"
            ],
            "defaultStatus": "affected",
            "packageName": "ansible-automation-platform-25/lightspeed-chatbot-rhel8",
            "product": "Red Hat Ansible Automation Platform 2",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:ansible_automation_platform:2"
            ],
            "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"
          }
        ],
        "datePublic": "2026-03-31T02:01:49.320Z",
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in LangChain. Multiple functions in `langchain_core.prompts.loading` read files from paths embedded in deserialized configuration dictionaries without validation for 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."
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "namespace": "https://access.redhat.com/security/updates/classification/",
                "value": "Important"
              },
              "type": "Red Hat severity rating"
            }
          },
          {
            "cvssV3_1": {
              "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"
            },
            "format": "CVSS"
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-22",
                "description": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-25T12:05:55.349Z",
          "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "shortName": "redhat-SADP"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2026-34070"
          },
          {
            "name": "RHBZ#2453287",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453287"
          },
          {
            "tags": [
              "x_sadp-csaf-vex"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34070.json"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:24766"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:59159"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2026:37275"
          }
        ],
        "solutions": [
          {
            "lang": "en",
            "value": "RHSA-2026:24766: Red Hat Ansible Automation Platform 2.5"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:59159: Red Hat Ansible Automation Platform 2.5"
          },
          {
            "lang": "en",
            "value": "RHSA-2026:37275: Red Hat OpenShift AI 3.3"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-03-31T03:02:19.523Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-03-31T02:01:49.320Z",
            "value": "Made public."
          }
        ],
        "title": "langchain: path traversal in legacy load_prompt functions in langchain-core",
        "workarounds": [
          {
            "lang": "en",
            "value": "As described in the statement section, the vulnerable methods are legacy APIs and their use should be avoided. To mitigate this issue, the dumpd, dumps, load and loads methods from langchain_core.load should be used, as they supersede the legacy API and provide a more secure serialization model."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "langchain",
          "vendor": "langchain-ai",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.22"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-31T02:01:49.320Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54"
        },
        {
          "name": "https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c"
        },
        {
          "name": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22"
        }
      ],
      "source": {
        "advisory": "GHSA-qh6h-p6c9-ff54",
        "discovery": "UNKNOWN"
      },
      "title": "LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-34070",
    "datePublished": "2026-03-31T02:01:49.320Z",
    "dateReserved": "2026-03-25T16:21:40.867Z",
    "dateUpdated": "2026-08-25T12:05:55.349Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-34070",
      "date": "2026-11-13",
      "epss": "0.01436",
      "percentile": "0.73535"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "langchain",
                "vendor": "langchain-ai",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.2.22"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          },
          {
            "affectedData": [
              {
                "collectionURL": "https://catalog.redhat.com/software/containers/",
                "cpes": [
                  "cpe:/a:redhat:ansible_automation_platform:2.5::el8"
                ],
                "defaultStatus": "affected",
                "packageName": "ansible-automation-platform-25/lightspeed-rhel8",
                "product": "Red Hat Ansible Automation Platform 2.5",
                "vendor": "Red Hat",
                "versions": [
                  {
                    "lessThan": "*",
                    "status": "unaffected",
                    "version": "1780082949",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "*",
                    "status": "unaffected",
                    "version": "1787229385",
                    "versionType": "rpm"
                  }
                ]
              },
              {
                "collectionURL": "https://catalog.redhat.com/software/containers/",
                "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"
                  }
                ]
              },
              {
                "collectionURL": "https://catalog.redhat.com/software/containers/",
                "cpes": [
                  "cpe:/a:redhat:openshift_ai:3.3::el9"
                ],
                "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"
                  }
                ]
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_lightspeed"
                ],
                "defaultStatus": "affected",
                "packageName": "openshift-lightspeed/lightspeed-service-api-rhel9",
                "product": "OpenShift Lightspeed",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:ansible_automation_platform:2"
                ],
                "defaultStatus": "affected",
                "packageName": "ansible-automation-platform-25/lightspeed-chatbot-rhel8",
                "product": "Red Hat Ansible Automation Platform 2",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:ansible_automation_platform:2"
                ],
                "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"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-34070",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T15:17:33.597003Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-03-31T03:15:58.947",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Exploit",
              "Vendor Advisory"
            ],
            "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://access.redhat.com/errata/RHSA-2026:24766"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://access.redhat.com/errata/RHSA-2026:37275"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://access.redhat.com/errata/RHSA-2026:59159"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://access.redhat.com/security/cve/CVE-2026-34070"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453287"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "tags": [
              "Exploit",
              "Vendor Advisory"
            ],
            "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34070.json"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-22"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-22"
              }
            ],
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-11-04T22:25:15+00:00",
      "cve": "CVE-2026-34070",
      "id": "CVE-2026-34070",
      "initial_release_date": "2026-03-31T02:01:49.320000+00:00",
      "product_status:fixed": "12",
      "product_status:known_affected": "4",
      "product_status:known_not_affected": "428",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "langchain: path traversal in legacy load_prompt functions in langchain-core",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34070.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "affected": [
              {
                "collectionURL": "https://catalog.redhat.com/software/containers/",
                "cpes": [
                  "cpe:/a:redhat:ansible_automation_platform:2.5::el8"
                ],
                "defaultStatus": "affected",
                "packageName": "ansible-automation-platform-25/lightspeed-rhel8",
                "product": "Red Hat Ansible Automation Platform 2.5",
                "vendor": "Red Hat",
                "versions": [
                  {
                    "lessThan": "*",
                    "status": "unaffected",
                    "version": "1780082949",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "*",
                    "status": "unaffected",
                    "version": "1787229385",
                    "versionType": "rpm"
                  }
                ]
              },
              {
                "collectionURL": "https://catalog.redhat.com/software/containers/",
                "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"
                  }
                ]
              },
              {
                "collectionURL": "https://catalog.redhat.com/software/containers/",
                "cpes": [
                  "cpe:/a:redhat:openshift_ai:3.3::el9"
                ],
                "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"
                  }
                ]
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_lightspeed"
                ],
                "defaultStatus": "affected",
                "packageName": "openshift-lightspeed/lightspeed-service-api-rhel9",
                "product": "OpenShift Lightspeed",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:ansible_automation_platform:2"
                ],
                "defaultStatus": "affected",
                "packageName": "ansible-automation-platform-25/lightspeed-chatbot-rhel8",
                "product": "Red Hat Ansible Automation Platform 2",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:ansible_automation_platform:2"
                ],
                "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"
              }
            ],
            "datePublic": "2026-03-31T02:01:49.320Z",
            "descriptions": [
              {
                "lang": "en",
                "value": "A flaw was found in LangChain. Multiple functions in `langchain_core.prompts.loading` read files from paths embedded in deserialized configuration dictionaries without validation for 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."
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "namespace": "https://access.redhat.com/security/updates/classification/",
                    "value": "Important"
                  },
                  "type": "Red Hat severity rating"
                }
              },
              {
                "cvssV3_1": {
                  "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"
                },
                "format": "CVSS"
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-22",
                    "description": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-25T12:05:55.349Z",
              "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "shortName": "redhat-SADP"
            },
            "references": [
              {
                "tags": [
                  "vdb-entry",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/security/cve/CVE-2026-34070"
              },
              {
                "name": "RHBZ#2453287",
                "tags": [
                  "issue-tracking",
                  "x_refsource_REDHAT"
                ],
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453287"
              },
              {
                "tags": [
                  "x_sadp-csaf-vex"
                ],
                "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34070.json"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:24766"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:59159"
              },
              {
                "tags": [
                  "vendor-advisory",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2026:37275"
              }
            ],
            "solutions": [
              {
                "lang": "en",
                "value": "RHSA-2026:24766: Red Hat Ansible Automation Platform 2.5"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:59159: Red Hat Ansible Automation Platform 2.5"
              },
              {
                "lang": "en",
                "value": "RHSA-2026:37275: Red Hat OpenShift AI 3.3"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-03-31T03:02:19.523Z",
                "value": "Reported to Red Hat."
              },
              {
                "lang": "en",
                "time": "2026-03-31T02:01:49.320Z",
                "value": "Made public."
              }
            ],
            "title": "langchain: path traversal in legacy load_prompt functions in langchain-core",
            "workarounds": [
              {
                "lang": "en",
                "value": "As described in the statement section, the vulnerable methods are legacy APIs and their use should be avoided. To mitigate this issue, the dumpd, dumps, load and loads methods from langchain_core.load should be used, as they supersede the legacy API and provide a more secure serialization model."
              }
            ],
            "x_adpType": "supplier",
            "x_generator": {
              "engine": "sadp-cli 1.0.0"
            }
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-34070",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-03-31T15:17:33.597003Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-03-31T15:17:43.293Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "langchain",
              "vendor": "langchain-ai",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 1.2.22"
                }
              ]
            }
          ],
          "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."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "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"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-22",
                  "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-03-31T02:01:49.320Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54"
            },
            {
              "name": "https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c"
            },
            {
              "name": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22"
            }
          ],
          "source": {
            "advisory": "GHSA-qh6h-p6c9-ff54",
            "discovery": "UNKNOWN"
          },
          "title": "LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-34070",
        "datePublished": "2026-03-31T02:01:49.320Z",
        "dateReserved": "2026-03-25T16:21:40.867Z",
        "dateUpdated": "2026-08-25T12:05:55.349Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Solutions

ADP · redhat-SADP
RHSA-2026:24766: Red Hat Ansible Automation Platform 2.5
RHSA-2026:59159: Red Hat Ansible Automation Platform 2.5
RHSA-2026:37275: Red Hat OpenShift AI 3.3

Workarounds

ADP · redhat-SADP
As described in the statement section, the vulnerable methods are legacy APIs and their use should be avoided. To mitigate this issue, the dumpd, dumps, load and loads methods from langchain_core.load should be used, as they supersede the legacy API and provide a more secure serialization model.

Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.