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CVE-2026-11922— Rate-limit Bypass in zenml-io/zenml

Quick assessment

Affected
zenml-io zenml-io/zenml
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ZenML是ZenML公司开源的一个可扩展的开源 MLOps 框架,用于创建可移植的、可用于生产的机器学习管道。 ZenML 0.57.0版本至0.94.2版本存在授权问题漏洞，该漏洞源于通过旋转 标头可绕过速率限制，导致身份验证端点容易受到凭证猜测攻击。

AI Predicted 7.5 Difficulty: Easy EPSS 0.30% · P20

Affected Version Matrix 1

VendorProduct Version RangeStatus
zenml-io zenml-io/zenml unspecified< 0.95.0 affected
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I. Basic Information for CVE-2026-11922

Vulnerability Information
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Vulnerability Title
Rate-limit Bypass in zenml-io/zenml
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
ZenML 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZenML是ZenML公司开源的一个可扩展的开源 MLOps 框架,用于创建可移植的、可用于生产的机器学习管道。 ZenML 0.57.0版本至0.94.2版本存在授权问题漏洞，该漏洞源于通过旋转`X-Forwarded-For`标头可绕过速率限制，导致身份验证端点容易受到凭证猜测攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
zenml-io zenml-io/zenml unspecified ~ 0.95.0 -

II. Public POCs for CVE-2026-11922

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III. Intelligence Information for CVE-2026-11922

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Patches & Fixes for CVE-2026-11922 (1)

Vendor Advisories for CVE-2026-11922 (1)

IV. Related Vulnerabilities

Same product: zenml-io/zenml
Same vendor: zenml-io
Same weakness: CWE-290

V. Comments for CVE-2026-11922

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