CVE-2026-48545
mediumpriority · track · 27EPSS 0.004 · 29 %ileEUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.6
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-7hp7-4p35-3cx2Gradio contains a cookie injection vulnerability2026-05-27ghsa · osvUS
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.
- PYSEC-2026-21782026-05-27vendor · osvUS
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.
also known as (6)
Other names and identifiers for this entity.
sources
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references (16)
External citations — patches, advisories, analysis.
- https://github.com/gradio-app/gradio/commit/feb7237d01f359d2ad4ee42d00344e61692b3b39cnnvd
- https://github.com/gradio-app/gradio/issues/13369cnnvd
- https://github.com/gradio-app/gradio/pull/13384cnnvd
- https://github.com/gradio-app/gradio/releasesPatchcnnvd
- https://github.com/gradio-app/gradio/releases/tag/gradio%406.15.0cnnvd
- https://www.vulncheck.com/advisories/gradio-cookie-injection-via-shared-procnnvd
- https://github.com/gradio-app/gradio/commit/feb7237d01f359d2ad4ee42d00344e61692b3b39enisa_euvd
- https://github.com/gradio-app/gradio/issues/13369enisa_euvd
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