ghsa-x2rg-q646-7m2v
Vulnerability from github
Published
2025-04-09 13:00
Modified
2025-04-09 20:29
Severity ?
5.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Summary
Koajs vulnerable to Cross-Site Scripting (XSS) at ctx.redirect() function
Details

Summary

In koa < 2.16.1 and < 3.0.0-alpha.5, passing untrusted user input to ctx.redirect() even after sanitizing it, may execute javascript code on the user who use the app.

Patches

This issue is patched in 2.16.1 and 3.0.0-alpha.5.

PoC

Coming soon...

Impact

  1. Redirect user to another phishing site
  2. Make request to another endpoint of the application based on user's cookie
  3. Steal user's cookie
Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "koa"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.16.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "koa"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0-alpha.1"
            },
            {
              "fixed": "3.0.0-alpha.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-32379"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-09T13:00:07Z",
    "nvd_published_at": "2025-04-09T16:15:25Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nIn koa \u003c 2.16.1 and \u003c 3.0.0-alpha.5, passing untrusted user input to ctx.redirect() even after sanitizing it, may execute javascript code on the user who use the app.\n\n### Patches\nThis issue is patched in  2.16.1 and 3.0.0-alpha.5.\n\n### PoC\nComing soon...\n\n### Impact\n1. Redirect user to another phishing site\n2. Make request to another endpoint of the application based on user\u0027s cookie\n3. Steal user\u0027s cookie",
  "id": "GHSA-x2rg-q646-7m2v",
  "modified": "2025-04-09T20:29:43Z",
  "published": "2025-04-09T13:00:07Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/koajs/koa/security/advisories/GHSA-x2rg-q646-7m2v"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-32379"
    },
    {
      "type": "WEB",
      "url": "https://github.com/koajs/koa/commit/ff25eb4a7f2392df46481fe86355161067687312"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/koajs/koa"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Koajs vulnerable to Cross-Site Scripting (XSS) at ctx.redirect() function"
}


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