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Vulnerability record · CVE-2026-48545 · published 27 May 2026

CVE-2026-48545: Gradio project gradio vulnerability

Gradio Project · Gradio

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.

7.6 CVSS 4.0 High EPSS 0.47% · top 61.9% CWE-384 · CWE-384
7.6CVSS 4.0 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
14 Jul 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/gradio-app/gradio/commit/feb7237d01f359d2ad4ee42d00344e61692b3b39 Patch
https://github.com/gradio-app/gradio/issues/13369 Issue Tracking
https://github.com/gradio-app/gradio/pull/13384 Issue TrackingPatch
https://github.com/gradio-app/gradio/releases/tag/gradio%406.15.0 ProductRelease Notes
https://www.vulncheck.com/advisories/gradio-cookie-injection-via-shared-pro Broken Link
https://github.com/gradio-app/gradio/issues/13369 Issue Tracking

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-48545), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.