CVE-2024-7774: Langchain Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-hc5w-c9f8-9cc4
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CVSS 6.5
CWE-29 CWE-22
Published
Advisory Summary

CVE-2024-7774 is a MODERATE (CVSS 6.5) path traversal vulnerability (CWE-29: Path Traversal: '\..\filename') affecting Langchain libraries in the npm ecosystem. The issue involves langchain path traversal vulnerability. Remediation is available by upgrading affected packages to version 0.2.19.

CVE-2024-7774 at a Glance

CVE Identifier CVE-2024-7774
GHSA Identifier GHSA-hc5w-c9f8-9cc4
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-29: Path Traversal: '\..\filename'
Affected Product Langchain
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2024-7774

To remediate this vulnerability, upgrade all affected Langchain dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

langchain fixed: 0.2.19 
npm install langchain@0.2.19
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls langchain

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2024-7774, inspect your project dependencies using npm:

npm ls langchain

Analyze the terminal output to locate any version of Langchain in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.2.19), your application is affected.

Note: The npm ls langchain command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-29: Path Traversal: '\..\filename', where the product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory. In Langchain, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A path traversal vulnerability exists in the `getFullPath` method of langchain-ai/langchainjs version 0.2.5. This vulnerability allows attackers to save files anywhere in the filesystem, overwrite existing text files, read `.txt` files, and delete files. The vulnerability is exploited through the `setFileContent`, `getParsedFile`, and `mdelete` methods, which do not properly sanitize user input.

CVE-2024-7774 Affected Langchain Versions

1 component(s)
Fixed Versions:
0.2.19
Product / Package Ecosystem Affected Versions Fixed Version
langchain
npm/langchain
npm
< 0.2.19
0.2.19

References

NVD — CVE-2024-7774 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-7774
Security Fix Commit FIX COMMIT
https://github.com/langchain-ai/langchainjs/commit/a0fad77d6b569e5872bd4a9d33be0c0785e538a9
Langchain Source Repository REPOSITORY
https://github.com/langchain-ai/langchainjs
Langchain Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/langchain/PYSEC-2024-111.yaml
huntr.com/bounties/8fe40685-b... WEB
https://huntr.com/bounties/8fe40685-b714-4191-af7a-3de5e5628cee

Frequently Asked Questions

What is CVE-2024-7774?
CVE-2024-7774 is a security vulnerability in Langchain involving Langchain Path Traversal vulnerability under CWE-29: Path Traversal: '\..\filename'.
Which Langchain versions are affected?
Affected versions include releases prior to 0.2.19 across affected packages: langchain.
What version fixes CVE-2024-7774?
Upgrading to 0.2.19 (or the latest patched release for your respective branch) resolves the vulnerability.
Is langchain affected?
Yes, langchain is affected in releases prior to 0.2.19. Upgrade your dependency to 0.2.19 or later.
What is the CVSS score of CVE-2024-7774?
CVE-2024-7774 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2024-7774?
CVE-2024-7774 is classified under CWE-29: Path Traversal: '\..\filename' (The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory.).
How can I check npm dependencies for CVE-2024-7774?
Run the dependency tree command: 'npm ls langchain'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-hc5w-c9f8-9cc4",
  "modified" : "2024-11-01T15:24:38Z",
  "published" : "2024-10-29T15:32:05Z",
  "aliases" : [ "CVE-2024-7774" ],
  "summary" : "Langchain Path Traversal vulnerability",
  "details" : "A path traversal vulnerability exists in the `getFullPath` method of langchain-ai/langchainjs version 0.2.5. This vulnerability allows attackers to save files anywhere in the filesystem, overwrite existing text files, read `.txt` files, and delete files. The vulnerability is exploited through the `setFileContent`, `getParsedFile`, and `mdelete` methods, which do not properly sanitize user input.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "langchain"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.2.19"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-7774"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/langchain-ai/langchainjs/commit/a0fad77d6b569e5872bd4a9d33be0c0785e538a9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/langchain-ai/langchainjs"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/langchain/PYSEC-2024-111.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/8fe40685-b714-4191-af7a-3de5e5628cee"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22", "CWE-29" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-10-29T19:40:07Z",
    "nvd_published_at" : "2024-10-29T13:15:09Z"
  }
}