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TI-2019-14549 Aliases CVE-2019-20174GHSA-w2pf-g6r8-pg22

Auth0 Lock before 11.21.0 allows XSS when additionalSignUpFields is used with an untrusted placeholder.

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Auth0 Lock before 11.21.0 allows XSS when additionalSignUpFields is used with an untrusted placeholder.

Why it matters now

EPSS 0.00724 54th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed auth0-lock (npm): 11.21.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—auth0-lock (npm)before 11.21.011.21.0Patch availableGHSA-w2pf-g6r8-pg22
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • auth0-lock (npm) Vendor— Affected before 11.21.0 Fixed in 11.21.0 Patch available GHSA-w2pf-g6r8-pg22

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:auth0:lock:*:*:*:*:*:*:*:*before 11.21.0Vulnerableauth0
  • cpe:2.3:a:auth0:lock:*:*:*:*:*:*:*:* Versions before 11.21.0 Vulnerable ·auth0

Remediation

  • Fix · GHSA-w2pf-g6r8-pg22 auth0-lock (npm) Fixed in 11.21.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-20174
  2. 2026-10-03 Alias added: GHSA-w2pf-g6r8-pg22

References

Exploit 1

Advisory 2

Other 2

  • TI-2021-12309 Reflected XSS when using flashMessages CVSS 3.1HIGH 8.1
  • TI-2020-11893 DOM-based XSS in auth0-lock CVSS 3.1MEDIUM 6.4
  • TI-2022-11716 HTML injection with additional signup fields CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences