GHSA-PC6W-59FV-RH23

Vulnerability from github – Published: 2025-09-04 12:30 – Updated: 2025-09-05 15:28
VLAI?
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.

Severity ?
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Show details on source website
To clipboard 

{
  "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"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.