{"id":"CVE-2026-48545","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-48545","generatedAt":"2026-10-27T23:57:51.010Z","title":"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.","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.","published":"2026-05-27T15:16:31.000Z","lastModified":"2026-10-08T16:17:18.000Z","status":"Analyzed","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":7.6,"severity":"HIGH","vector":"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/M"},"cwe":["CWE-384"],"affected":["gradio project/gradio"],"epss":{"score":0.0035,"percentile":0.28446,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/gradio-app/gradio/commit/feb7237d01f359d2ad4ee42d00344e61692b3b39","tags":["Patch"],"source":"disclosure@vulncheck.com"},{"url":"https://github.com/gradio-app/gradio/issues/13369","tags":["Issue Tracking"],"source":"disclosure@vulncheck.com"},{"url":"https://github.com/gradio-app/gradio/pull/13384","tags":["Issue Tracking","Patch"],"source":"disclosure@vulncheck.com"},{"url":"https://github.com/gradio-app/gradio/releases/tag/gradio%406.15.0","tags":["Product","Release Notes"],"source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/gradio-cookie-injection-via-shared-pro","tags":["Broken Link"],"source":"disclosure@vulncheck.com"},{"url":"https://github.com/gradio-app/gradio/issues/13369","tags":["Issue Tracking"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-48545","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}