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AI agent vulnerability · Gradio

CVE-2026-48545: Gradio contains a cookie injection vulnerability

highCVSS 4.0 7.6 · 3.1 6.8GHSA-7hp7-4p35-3cx2

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.

Published May 27, 2026 · Updated Jul 1, 2026

Affected packages

gradio

Ecosystem
PyPI
Affected
< 6.15.0
Fixed in
6.15.0
Check
pip show gradio

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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