Gradio contains a cookie injection vulnerability
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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-48545US | medium6.8 | — | ||
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… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/gradio-app/gradioPACKAGE
- https://github.com/gradio-app/gradio/commit/feb7237d01f359d2ad4ee42d00344e61692b3b39WEB
- https://github.com/gradio-app/gradio/issues/13369WEB
- https://github.com/gradio-app/gradio/pull/13384WEB
- https://github.com/gradio-app/gradio/releases/tag/gradio@6.15.0WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-48545ADVISORY
- https://www.vulncheck.com/advisories/gradio-cookie-injection-via-shared-proWEB
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