Credential disclosure via unchecked file URL redirect
Published Jul 8, 2026 · Updated Jul 8, 2026
Open redirect and client-side SSRF in Gradio before 6.20.0 allow remote attackers to expose data through crafted file URLs. The /gradio_api/file= and /gradio_api/file/ routes pass any HTTP or HTTPS value to file_fetch(), which returns an unchecked 302 redirect that gradio_client follows. Exploitation requires a victim client to download attacker-controlled FileData; the redirect can reach link-local metadata and disclose instance-role credentials.
Summary
What happened
Open redirect and client-side SSRF in Gradio before 6.20.0 allow remote attackers to expose data through crafted file URLs. The /gradio_api/file= and /gradio_api/file/ routes pass any HTTP or HTTPS value to file_fetch(), which returns an unchecked 302 redirect that gradio_client follows. Exploitation requires a victim client to download attacker-controlled FileData; the redirect can reach link-local metadata and disclose instance-role credentials.
The record
- CVE
- CVE-2026-59806
- Published
- Jul 8, 2026
- Updated
- Jul 8, 2026
- Vendor
- Gradio
- Product
- Gradio
- Classifications
- CWE-918, CWE-601, T1552.005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 8, 2026CVE publishedPublication date reported by the CVE source.
- Jul 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <6.20.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Upstream file-route redirect and metadata SSRF reproductionfunctional · demonstrated
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Technologies
Your stack
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Your stack
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