Auth0 Auth0-WCF-Service-JWT before 1.0.4 leaks the expected JWT signature in an error message when it cannot successfully validate the JWT signature
Published Apr 11, 2019
9.8
CRITICALCVSS 3.0
EPSS 1.71%
Description
Auth0 Auth0-WCF-Service-JWT before 1.0.4 leaks the expected JWT signature in an error message when it cannot successfully validate the JWT signature. If this error message is presented to an attacker, they can forge an arbitrary JWT token that will be accepted by the vulnerable application.
Affected products
No data.
- < 1.0.4
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.71% (0.01706) | 76.45th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.66% (0.01657) | 73.48th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.22% (0.00222) | 60.93th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.22% (0.00222) | 60.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.22% (0.00222) | 58.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.03% (0.09029) | 86.86th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.84% (0.01840) | 47.83th | v5 (v2026.06.15) |
| Jan 6, 2022 | 1.84% (0.01840) | 47.32th | v1 |
| Sep 1, 2021 | 0.42% (0.00416) | 25.53th | v1 |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (3)
- https://auth0.com/docs/security/bulletins/cve-2019-7644 x_refsource_MISCPatchVendor Advisory
- https://github.com/advisories/GHSA-qpvx-gpqm-g98j Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-7644
| Link | Providers | Tags |
|---|---|---|
| https://auth0.com/docs/security/bulletins/cve-2019-7644 | x_refsource_MISCPatchVendor Advisory | |
| https://github.com/advisories/GHSA-qpvx-gpqm-g98j | Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-7644 |
Change history (0)
No recorded changes yet.