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…

PriorityP337high7.5CVSS 3.1

AVNACLPRNUINSUCHINAN

EPSS

1.56%

72.1th percentile

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
github.com	containous_traefik_v2	>= 0 < 2.2.2	2.2.2
github.com	traefik_traefik_v2	>= 0 < 2.2.2	2.2.2
traefik	traefik	>= 2.0.0 < 2.0.1	2.0.1

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:P/I:N/A:N

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.