GHSA-GVQ6-HVVP-H34H

Vulnerability from github – Published: 2026-01-02 18:58 – Updated: 2026-01-03 00:32
VLAI?
Summary
AdonisJS Path Traversal in Multipart File Handling
Details

Summary

Description A Path Traversal (CWE-22) vulnerability in AdonisJS multipart file handling may allow a remote attacker to write arbitrary files to arbitrary locations on the server filesystem. This impacts @adonisjs/bodyparser through version 10.1.1 and 11.x prerelease versions prior to 11.0.0-next.6. This issue has been patched in @adonisjs/bodyparser versions 10.1.2 and 11.0.0-next.6.

Details

AdonisJS parses multipart/form-data via BodyParser and exposes uploads as MultipartFile. The issue is in the MultipartFile.move(location, options) default options. If options.name isn't provided, it defaults to the unsanitized client filename and builds the destination with path.join(location, name), allowing a traversal to escape the default or intended directory chosen by the developer. If options.overwrite isn't provided, it defaults to true, allowing file overwrites. The documentation previously demonstrated examples leading developers to this vulnerable code path.

Impact

Exploitation requires a reachable upload endpoint. If a developer uses MultipartFile.move() without the second options argument or without explicitly sanitizing the filename, an attacker can supply a crafted filename value containing traversal sequences, writing to a destination path outside the intended upload directory. This can lead to arbitrary file write on the server.

If the attacker can overwrite application code, startup scripts, or configuration files that are later executed/loaded, RCE is possible. RCE is not guaranteed and depends on filesystem permissions, deployment layout, and application/runtime behavior.

Patches

Fixes targeting v6 and v7 have been published below. - https://github.com/adonisjs/bodyparser/releases/tag/v10.1.2 - https://github.com/adonisjs/bodyparser/releases/tag/v11.0.0-next.6

Severity ?
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@adonisjs/bodyparser"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "10.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@adonisjs/bodyparser"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "11.0.0-next.0"
            },
            {
              "fixed": "11.0.0-next.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-21440"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-02T18:58:32Z",
    "nvd_published_at": "2026-01-02T19:15:48Z",
    "severity": "CRITICAL"
  },
  "details": "### Summary\n\n**Description**\nA Path Traversal (CWE-22) vulnerability in AdonisJS multipart file handling may allow a remote attacker to write arbitrary files to arbitrary locations on the server filesystem. This impacts @adonisjs/bodyparser through version 10.1.1 and 11.x prerelease versions prior to 11.0.0-next.6. This issue has been patched in @adonisjs/bodyparser versions 10.1.2 and 11.0.0-next.6.\n\n### Details\nAdonisJS parses `multipart/form-data` via `BodyParser` and exposes uploads as `MultipartFile`. The issue is in the `MultipartFile.move(location, options)` default options. If `options.name` isn\u0027t provided, it defaults to the unsanitized client filename and builds the destination with `path.join(location, name)`, allowing a traversal to escape the default or intended directory chosen by the developer. If `options.overwrite` isn\u0027t provided, it defaults to true, allowing file overwrites. The documentation previously demonstrated examples leading developers to this vulnerable code path.\n### Impact\n\nExploitation requires a reachable upload endpoint. If a developer uses `MultipartFile.move()` without the second `options` argument or without explicitly sanitizing the filename, an attacker can supply a crafted `filename` value containing traversal sequences, writing to a destination path outside the intended upload directory. This can lead to arbitrary file write on the server.\n\nIf the attacker can overwrite application code, startup scripts, or configuration files that are later executed/loaded, RCE is possible. RCE is not guaranteed and depends on filesystem permissions, deployment layout, and application/runtime behavior.\n\n### Patches\nFixes targeting v6 and v7 have been published below.\n- https://github.com/adonisjs/bodyparser/releases/tag/v10.1.2\n- https://github.com/adonisjs/bodyparser/releases/tag/v11.0.0-next.6",
  "id": "GHSA-gvq6-hvvp-h34h",
  "modified": "2026-01-03T00:32:09Z",
  "published": "2026-01-02T18:58:32Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/core/security/advisories/GHSA-gvq6-hvvp-h34h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21440"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/bodyparser/commit/143a16f35602be8561215611582211dec280cae6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/bodyparser/commit/6795c0e3fa824ae275bbd992aae60609e96f0f03"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/bodyparser/releases/tag/v10.1.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/bodyparser/releases/tag/v11.0.0-next.6"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/adonisjs/core"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "AdonisJS Path Traversal in Multipart File Handling"
}


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  • 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.



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