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Vulnerabilities CVE-2026-11922

CVE-2026-11922

Medium
Open
TLP:CLEAR

Rate-limit Bypass in zenml-io/zenml

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Description

A vulnerability in zenml-io/zenml versions 0.57.0 through 0.94.2 allows an attacker to bypass rate-limiting on the `POST /api/v1/login` and self password-change endpoints by rotating the `X-Forwarded-For` header. The rate limiter keys requests by `request.client.host`, which is derived from the `X-Forwarded-For` header when Uvicorn is launched with `--proxy-headers --forwarded-allow-ips *`. This configuration allows clients to control the value of `request.client.host`, effectively bypassing rate-limiting protections. This vulnerability leaves the affected endpoints open to unthrottled credential guessing attacks.

Details

CVSS Score
6.5
EPSS Score
0.18%

7.7th percentile

CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Confidence
90%
Published
Jul 24, 2026
Last Modified
Jul 24, 2026
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