PT-2026-44008 · Gradio App · Gradio

Yu Sun · Published 2026-05-27 · Updated 2026-05-27 · CVE-2026-48545

Mitre

CVSS v3.1

6.8

Medium

Base vector

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

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.

Exploit

Fix

Session Fixation

Weakness Enumeration

CWE-384

Related Identifiers

CVE-2026-48545

Affected Products

Gradio

References · 6

• 🔥 https://github.com/gradio-app/gradio/issues/13369 · Exploit
• https://github.com/gradio-app/gradio/commit/feb7237d01f359d2ad4ee42d00344e61692b3b39 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-48545 · Security Note
• https://github.com/gradio-app/gradio/releases/tag/gradio%406.15.0 · Note
• https://github.com/gradio-app/gradio/pull/13384 · Note
• https://vulncheck.com/advisories/gradio-cookie-injection-via-shared-pro · Note