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CVE

CWE

Training

CVE-2026-48545

Published: May 27, 2026

Modified: May 27, 2026

PUBLISHED

CVSS v3.1

6.8

MEDIUM

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.

Vendor	Product	Versions
gradio-app	gradio	affected `0 - < 6.15.0`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

References

https://github.com/gradio-app/gradio/releases/tag/gradio%406.15.0

release-notes

https://github.com/gradio-app/gradio/issues/13369

technical-description

https://github.com/gradio-app/gradio/pull/13384

issue-tracking

https://github.com/gradio-app/gradio/commit/feb7237d01f359d2ad4ee42d00344e61692b3b39

patch

https://www.vulncheck.com/advisories/gradio-cookie-injection-via-shared-pro

third-party-advisory

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