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TI-2019-12628 Aliases CVE-2019-16929GHSA-c9cg-q8r2-xvjq

Auth0 auth0.net before 6.5.4 has Incorrect Access Control because IdentityTokenValidator…

Priority LOW 35CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

Auth0 auth0.net before 6.5.4 has Incorrect Access Control because IdentityTokenValidator can be accidentally used to validate untrusted ID tokens.

Why it matters now

EPSS 0.00891 59th percentileScored 2026-11-07
Fix Fixed Auth0.AuthenticationApi (NuGet): 6.5.4

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.AuthenticationApi (NuGet)5.8.0 to before 6.5.46.5.4Patch availableGHSA-c9cg-q8r2-xvjq
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • Auth0.AuthenticationApi (NuGet) Vendor— Affected 5.8.0 to before 6.5.4 Fixed in 6.5.4 Patch available GHSA-c9cg-q8r2-xvjq

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:auth0:auth0.net:*:*:*:*:*:*:*:*5.8.0 – 6.5.3Vulnerableauth0
  • cpe:2.3:a:auth0:auth0.net:*:*:*:*:*:*:*:* Versions 5.8.0 – 6.5.3 Vulnerable ·auth0

Remediation

  • Fix · GHSA-c9cg-q8r2-xvjq Auth0.AuthenticationApi (NuGet) Fixed in 6.5.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-16929
  2. 2026-10-03 Alias added: GHSA-c9cg-q8r2-xvjq

References

Advisory 2

Sources

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