CVE-2019-16929 json
Improper Authentication in Auth0.AuthenticationApi
published 2019-10-08 7 y ago modified 2026-06-17 4 mo ago also GHSA-c9cg-q8r2-xvjq , EUVD-2019-0697
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
Auth0 auth0.net before 6.5.4 has Incorrect Access Control because IdentityTokenValidator can be accidentally used to validate untrusted ID tokens.
Patch / fix
- nuget Auth0.AuthenticationApi 6.5.4
Exploit prediction
0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | Auth0.AuthenticationApi | >=5.8.0, <6.5.4 |
6.5.4 |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
auth0.com
/docs/security/bulletins/cve-2019-16929
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-16929
advisory
Sources
- CVE List CVE-2019-16929
- GitHub Advisory GHSA-c9cg-q8r2-xvjq
- NVD CVE-2019-16929
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.