CVE-2019-20894
CVSS v3
7.5
HIGH
EPSS Score
1.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2020-07-02
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.
Is CVE-2019-20894 actively exploited?
Active exploitation of CVE-2019-20894 has not been confirmed. Its EPSS score was 1.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-20894?
CVE-2019-20894 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2019-20894 affecting your environment?
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