Hugging Face Text Embeddings Inference through 1.9.4 Cleartext API Key Logging

Advisories

Hugging Face Text Embeddings Inference through 1.9.4 Cleartext API Key Logging

severity: medium
date: 10/11/2026
Affecting: Text Embeddings Inference <= 1.9.4
CVE: CVE-2026-108857
CWE: CWE-532 Insertion of Sensitive Information into Log File
CVSS: 4.8
CVSS V4 Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
References: https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/huggingface-text-embeddings-inference-api-key-startup-log
https://github.com/huggingface/text-embeddings-inference/blob/e80ef225ed0e6cb1717ce632a6a84b6cf211bb67/router/src/main.rs#L170-L174
https://github.com/huggingface/text-embeddings-inference/blob/e80ef225ed0e6cb1717ce632a6a84b6cf211bb67/router/src/main.rs#L204-L216
https://github.com/huggingface/text-embeddings-inference
Credit: hieuPenguinnn
Description: Hugging Face Text Embeddings Inference through 1.9.4 contains a cleartext logging vulnerability that exposes the configured api_key because the router's Args struct lacks a redact attribute for it. Attackers with access to router logs, container output, or OTLP telemetry can recover the Bearer token and call the protected embedding and rerank endpoints.

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