CVE-2026-25050: @vendure/core Vendure Vulnerable To Timing Attack Vulnerability

LOW
Advisory Identifier: GHSA-6f65-4fv2-wwch
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CWE-202
Published
Advisory Summary

CVE-2026-25050 is a LOW vendure vulnerable to timing attack vulnerability (CWE-202: Exposure of Sensitive Information Through Data Queries) affecting @vendure/core libraries in the npm ecosystem. The issue involves vendure vulnerable to timing attack that enables user enumeration in nativeauthenticationstrategy. Remediation is available by upgrading affected packages to version 3.5.3.

CVE-2026-25050 at a Glance

CVE Identifier CVE-2026-25050
GHSA Identifier GHSA-6f65-4fv2-wwch
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-202: Exposure of Sensitive Information Through Data Queries
Affected Product @vendure/core
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2026-25050

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

@vendure/core fixed: 3.5.3 
npm install @vendure/core@3.5.3
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 @vendure/core

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-25050, inspect your project dependencies using npm:

npm ls @vendure/core

Analyze the terminal output to locate any version of @vendure/core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.5.3), your application is affected.

Note: The npm ls @vendure/core 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-202: Exposure of Sensitive Information Through Data Queries, where when trying to keep information confidential, an attacker can often infer some of the information by using statistics. In @vendure/core, 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

### 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: ```typescript 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.

CVE-2026-25050 Affected @vendure/core Versions

1 component(s)
Fixed Versions:
3.5.3
Product / Package Ecosystem Affected Versions Fixed Version
@vendure/core
npm/@vendure/core
npm
< 3.5.3
3.5.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vendurehq/vendure/security/advisories/GHSA-6f65-4fv2-wwch
NVD — CVE-2026-25050 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25050
Security Fix Commit FIX COMMIT
https://github.com/vendurehq/vendure/commit/7f0c5556ecddb44a5d5208677a45fdd5923b0cc9
@vendure/core Source Repository REPOSITORY
https://github.com/vendurehq/vendure
@vendure/core Release RELEASE
https://github.com/vendurehq/vendure/releases/tag/v3.5.3

Frequently Asked Questions

What is CVE-2026-25050?
CVE-2026-25050 is a security vulnerability in @vendure/core involving Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy under CWE-202: Exposure of Sensitive Information Through Data Queries.
Which @vendure/core versions are affected?
Affected versions include releases prior to 3.5.3 across affected packages: @vendure/core.
What version fixes CVE-2026-25050?
Upgrading to 3.5.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @vendure/core affected?
Yes, @vendure/core is affected in releases prior to 3.5.3. Upgrade your dependency to 3.5.3 or later.
What CWE is associated with CVE-2026-25050?
CVE-2026-25050 is classified under CWE-202: Exposure of Sensitive Information Through Data Queries (When trying to keep information confidential, an attacker can often infer some of the information by using statistics.).
How can I check npm dependencies for CVE-2026-25050?
Run the dependency tree command: 'npm ls @vendure/core'. 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-6f65-4fv2-wwch",
  "modified" : "2026-01-30T19:35:40Z",
  "published" : "2026-01-30T19:35:40Z",
  "aliases" : [ "CVE-2026-25050" ],
  "summary" : "Vendure vulnerable to timing attack that enables user enumeration in NativeAuthenticationStrategy",
  "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.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@vendure/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.5.3"
      } ]
    } ]
  } ],
  "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"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-202" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-30T19:35:40Z",
    "nvd_published_at" : "2026-01-30T16:16:13Z"
  }
}