CVE-2019-20894
HIGHCVSS 7.5/10EPSS 1.56%
Last modified
CVE-2019-20894 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Traefik 2.x, in certain configurations, allows HTTPS sessions to proceed without mutual TLS verification in a situation where ERR_BAD_SSL_CLIENT_AUTH_CERT should have occurred.. EPSS estimates a 1.56% chance of exploitation in the next 30 days.
Description
Traefik 2.x, in certain configurations, allows HTTPS sessions to proceed without mutual TLS verification in a situation where ERR_BAD_SSL_CLIENT_AUTH_CERT should have occurred.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Traefik | Traefik | >= 2.0.0, < 2.0.1 |
References
- https://github.com/containous/traefik/issues/5312Exploit, Issue Tracking, Third Party Advisory
- https://github.com/containous/traefik/issues/5312Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-20894?
Traefik 2.x, in certain configurations, allows HTTPS sessions to proceed without mutual TLS verification in a situation where ERR_BAD_SSL_CLIENT_AUTH_CERT should have occurred.
How severe is CVE-2019-20894?
CVE-2019-20894 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.56% probability of exploitation in the next 30 days.
How do I fix CVE-2019-20894?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2019
- CVE-2019-20889An issue was discovered in Mattermost Server before 5.7, 5.6…5.3
- CVE-2019-2089In app uninstallation, there is a possible set of permission…7.8
- CVE-2019-20890An issue was discovered in Mattermost Server before 5.7. It …4.3
- CVE-2019-20891WooCommerce before 3.6.5, when it handles CSV imports of pro…8.8
- CVE-2019-20892net-snmp before 5.8.1.pre1 has a double free in usm_free_usm…6.5
- CVE-2019-20893An issue was discovered in Activision Infinity Ward Call of …9.8
- CVE-2019-20896WebChess 1.0 allows SQL injection via the messageFrom, gameI…9.8
- CVE-2019-20897The avatar upload feature in affected versions of Atlassian …6.5
- CVE-2019-20898Affected versions of Atlassian Jira Server and Data Center a…7.5
- CVE-2019-20899The Gadget API in Atlassian Jira Server and Data Center in a…5.3
- CVE-2019-2090In isPackageDeviceAdminOnAnyUser of PackageManagerService.ja…
- CVE-2019-20900Affected versions of Atlassian Jira Server and Data Center a…4.8
Are you affected by CVE-2019-20894?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST