EUVD-2026-232493

fkie_cve-2022-23469

Traefik is an open source HTTP reverse proxy and load balancer. Versions prior to 2.9.6 are subject to a potential vulnerability in Traefik displaying the Authorization header in its debug logs. In certain cases, if the log level is set to DEBUG, credentials provided using the Authorization header are displayed in the debug logs. Attackers must have access to a users logging system in order for credentials to be stolen. This issue has been addressed in version 2.9.6. Users are advised to upgrade. Users unable to upgrade may set the log level to `INFO`, `WARN`, or `ERROR`.

GHSA-h2ph-vhm7-g4hp — Traefik may display authorization header in the debug logs

Affected: Go: github.com/traefik/traefik/v2

### Impact

There is a potential vulnerability in Traefik displaying the Authorization header in its debug logs.

Traefik uses [oxy](https://github.com/vulcand/oxy) to provide the following features:

- Round Robin: https://doc.traefik.io/traefik/routing/services/#weighted-round-robin-service - Buffering: https://doc.traefik.io/traefik/middlewares/http/buffering/ - Circuit Breaker: https://doc.traefik.io/traefik/middlewares/http/circuitbreaker/ - In-Flight Requests: https://doc.traefik.io/traefik/middlewares/http/inflightreq/

In such cases, if the log level is set to DEBUG, the credentials provided using the Authorization header are displayed in the debug logs:

``` level=debug msg="vulcand/oxy/roundrobin/rr: completed ServeHttp on request" Request="{\\"Method\\":\\"POST\\",\\"URL\\":{\\"Scheme\\":\\"\\",\\"Opaque\\":\\"\\",\\"User\\":null,\\"Host\\":\\"\\",\\"Path\\":\\"/<redacted>/<redacted>\\",\\"RawPath\\":\\"\\",\\"ForceQuery\\":false,\\"RawQuery\\":\\"\\",\\"Fragment\\":\\"\\",\\"RawFragment\\":\\"\\"},\\"Proto\\":\\"HTTP/2.0\\",\\"ProtoMajor\\":2,\\"ProtoMinor\\":0,\\"Header\\":{\\"Authorization\\":[\\"Bearer <token value was here>\\"],\\"Content-Type\\":[\\"application/grpc\\"],\\"Grpc-Accept-Encoding\\":[\\"gzip\\"],\\"Grpc-Timeout\\":[\\"29999886u\\"],\\"Te\\":[\\"trailers\\"],\\"User-Agent\\":[\\"<redacted>\\"],<remainder of log message removed> ```

### Patches

https://github.com/traefik/traefik/pull/9574 https://github.com/traefik/traefik/releases/tag/v2.9.6…

openSUSE-SU-2024:12615-1 — traefik-2.9.6-1.1 on GA media

traefik-2.9.6-1.1 on GA media

Most recent entries from all

EUVD-2026-232493

fkie_cve-2022-23469

GHSA-h2ph-vhm7-g4hp — Traefik may display authorization header in the debug logs

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openSUSE-SU-2024:12615-1 — traefik-2.9.6-1.1 on GA media