github - ghsa-pc6w-59fv-rh23

ghsa-pc6w-59fv-rh23

Vulnerability from github

Published

2025-09-04 12:30

Modified

2025-09-05 15:28

Severity ?

7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

Langchain Community Vulnerable to XML External Entity (XXE) Attacks

Details

The langchain-ai/langchain project, specifically the EverNoteLoader component, is vulnerable to XML External Entity (XXE) attacks due to insecure XML parsing. The vulnerability arises from the use of etree.iterparse() without disabling external entity references, which can lead to sensitive information disclosure. An attacker could exploit this by crafting a malicious XML payload that references local files, potentially exposing sensitive data such as /etc/passwd. This issue has been fixed in 0.3.27 of langchain-community.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "langchain-community"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.3.27"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-6984"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-09-05T15:28:25Z",
    "nvd_published_at": "2025-09-04T10:42:33Z",
    "severity": "HIGH"
  },
  "details": "The langchain-ai/langchain project, specifically the EverNoteLoader component, is vulnerable to XML External Entity (XXE) attacks due to insecure XML parsing. The vulnerability arises from the use of etree.iterparse() without disabling external entity references, which can lead to sensitive information disclosure. An attacker could exploit this by crafting a malicious XML payload that references local files, potentially exposing sensitive data such as /etc/passwd. This issue has been fixed in 0.3.27 of langchain-community.",
  "id": "GHSA-pc6w-59fv-rh23",
  "modified": "2025-09-05T15:28:25Z",
  "published": "2025-09-04T12:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6984"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchain-community/commit/e842452108089524e22c3a2ced851c021884556f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/langchain-ai/langchain-community"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain-ai/langchain/blob/d79b5813a0b3b243c612b77013768995e46c4337/libs/langchain/langchain/document_loaders/evernote.py#L1-L23"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/a6b521cf-258c-41c0-9edb-d8ef976abb2a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Langchain Community Vulnerable to XML External Entity (XXE) Attacks"
}

CVE-2025-6984 (GCVE-0-2025-6984)

Vulnerability from cvelistv5

Published

2025-09-04 08:07

Modified

2025-09-04 20:07

Severity ?

7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Summary

The langchain-ai/langchain project, specifically the EverNoteLoader component, is vulnerable to XML External Entity (XXE) attacks due to insecure XML parsing. The affected version is 0.3.63. The vulnerability arises from the use of etree.iterparse() without disabling external entity references, which can lead to sensitive information disclosure. An attacker could exploit this by crafting a malicious XML payload that references local files, potentially exposing sensitive data such as /etc/passwd.

References

▼	URL	Tags
	https://huntr.com/bounties/a6b521cf-258c-41c0-9edb-d8ef976abb2a

Impacted products

	Vendor	Product	Version
	langchain-ai	langchain-ai/langchain	Version: unspecified <

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-6984",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-09-04T20:07:23.933476Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        ],
        "providerMetadata": {
          "dateUpdated": "2025-09-04T20:07:31.531Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "langchain-ai/langchain",
          "vendor": "langchain-ai",
          "versions": [
            {
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              "status": "affected",
              "version": "unspecified",
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      "descriptions": [
        {
          "lang": "en",
          "value": "The langchain-ai/langchain project, specifically the EverNoteLoader component, is vulnerable to XML External Entity (XXE) attacks due to insecure XML parsing. The affected version is 0.3.63. The vulnerability arises from the use of etree.iterparse() without disabling external entity references, which can lead to sensitive information disclosure. An attacker could exploit this by crafting a malicious XML payload that references local files, potentially exposing sensitive data such as /etc/passwd."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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      "providerMetadata": {
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        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
        "shortName": "@huntr_ai"
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      "references": [
        {
          "url": "https://huntr.com/bounties/a6b521cf-258c-41c0-9edb-d8ef976abb2a"
        }
      ],
      "source": {
        "advisory": "a6b521cf-258c-41c0-9edb-d8ef976abb2a",
        "discovery": "EXTERNAL"
      },
      "title": "Sensitive Information Disclosure Due to Insecure XML Parsing in langchain-ai/langchain"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
    "assignerShortName": "@huntr_ai",
    "cveId": "CVE-2025-6984",
    "datePublished": "2025-09-04T08:07:41.996Z",
    "dateReserved": "2025-07-01T20:19:39.922Z",
    "dateUpdated": "2025-09-04T20:07:31.531Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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