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CVE-2026-48545— Gradio < 6.15.0 Cookie Injection via Shared Proxy Client

Quick assessment

Affected
gradio-app gradio
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.

Gradio是Gradio开源的一个开源 Python 库，是通过友好的 Web 界面演示机器学习模型的方法。 Gradio 6.15.0之前版本存在安全漏洞，该漏洞源于共享模块级HTTP客户端导致跨Space会话固定，可能允许远程攻击者通过返回父域cookie影响所有用户。

CVSS 6.8 · Medium EPSS 0.47% · P38

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
gradio-app gradio < 6.15.0 affected
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I. Basic Information for CVE-2026-48545

Vulnerability Information
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Vulnerability Title
Gradio < 6.15.0 Cookie Injection via Shared Proxy Client
Source: CVE Program / CVE List V5
Vulnerability Description
Gradio before version 6.15.0 contains a cookie injection vulnerability that allows remote attackers to perform cross-Space session fixation by exploiting a shared module-level HTTP client used across all users in the reverse proxy endpoint. Attackers controlling any HF Space can return a parent-domain cookie that the shared client stores and automatically replays into all subsequent proxy requests to other legitimate Spaces, affecting all users of the same Gradio deployment.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
会话固定
Source: CVE Program / CVE List V5
Vulnerability Title
Gradio 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gradio是Gradio开源的一个开源 Python 库，是通过友好的 Web 界面演示机器学习模型的方法。 Gradio 6.15.0之前版本存在安全漏洞，该漏洞源于共享模块级HTTP客户端导致跨Space会话固定，可能允许远程攻击者通过返回父域cookie影响所有用户。
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
gradio-app gradio 0 ~ 6.15.0 -

II. Public POCs for CVE-2026-48545

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III. Intelligence Information for CVE-2026-48545

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Patches & Fixes for CVE-2026-48545 (2)

Vendor Advisories for CVE-2026-48545 (2)

Vendor Pages for CVE-2026-48545 (1)

IV. Related Vulnerabilities

Same product: gradio
Same vendor: gradio-app
Same weakness: CWE-384

V. Comments for CVE-2026-48545

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