GHSA-6F65-4FV2-WWCH

Vulnerability from github – Published: 2026-01-30 19:35 – Updated: 2026-01-30 19:35
VLAI
Summary
Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy
Details

Summary

The NativeAuthenticationStrategy.authenticate() method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses).

Details

In packages/core/src/config/auth/native-authentication-strategy.ts, the authenticate method returns immediately if a user is not found:

const user = await this.userService.getUserByEmailAddress(ctx, data.username);
if (!user) {
    return false; // Instant return (~1-5ms)
}
const passwordMatch = await this.verifyUserPassword(ctx, user.id, data.password);
// Password check takes ~200-400ms with bcrypt (12 rounds)

The significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts.

Impact

  • Attackers can enumerate valid user accounts
  • Enables targeted brute-force or phishing attacks
  • Information disclosure (account existence)

Recommended Fix

Perform a dummy bcrypt check when user is not found to ensure consistent response times.

Severity
2.7 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@vendure/core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25050"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-202"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-30T19:35:40Z",
    "nvd_published_at": "2026-01-30T16:16:13Z",
    "severity": "LOW"
  },
  "details": "### Summary\nThe `NativeAuthenticationStrategy.authenticate()` method is vulnerable to a timing attack that allows attackers to enumerate valid usernames (email addresses).\n\n### Details\nIn `packages/core/src/config/auth/native-authentication-strategy.ts`, the authenticate method returns immediately if a user is not found:\n\n```typescript\nconst user = await this.userService.getUserByEmailAddress(ctx, data.username);\nif (!user) {\n    return false; // Instant return (~1-5ms)\n}\nconst passwordMatch = await this.verifyUserPassword(ctx, user.id, data.password);\n// Password check takes ~200-400ms with bcrypt (12 rounds)\n```\n\nThe significant timing difference (~200-400ms for bcrypt vs ~1-5ms for DB miss) allows attackers to reliably distinguish between existing and non-existing accounts.\n\n### Impact\n- Attackers can enumerate valid user accounts\n- Enables targeted brute-force or phishing attacks\n- Information disclosure (account existence)\n\n### Recommended Fix\nPerform a dummy bcrypt check when user is not found to ensure consistent response times.",
  "id": "GHSA-6f65-4fv2-wwch",
  "modified": "2026-01-30T19:35:40Z",
  "published": "2026-01-30T19:35:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/vendurehq/vendure/security/advisories/GHSA-6f65-4fv2-wwch"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25050"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vendurehq/vendure/commit/7f0c5556ecddb44a5d5208677a45fdd5923b0cc9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/vendurehq/vendure"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vendurehq/vendure/releases/tag/v3.5.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.