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Vulnerabilities CVE-2026-48545

CVE-2026-48545

High
Open
TLP:CLEAR

Gradio < 6.15.0 Cookie Injection via Shared Proxy Client

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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.

Details

CVSS Score
7.6
EPSS Score
0.35%

27.9th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
May 27, 2026
Last Modified
Jul 14, 2026
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