Application hang via oversized multipart filename
Published Mar 20, 2025 · Updated Mar 20, 2025
Denial of service in Gradio 0.39.1 allows remote attackers to hang a web application by uploading multipart form data with a huge filename. The file-upload request path accepts an excessively long multipart filename without an effective size bound, exhausting server processing capacity. A network-reachable upload endpoint is required; successful exploitation makes the application unresponsive without reported data access or modification.
Summary
What happened
Denial of service in Gradio 0.39.1 allows remote attackers to hang a web application by uploading multipart form data with a huge filename. The file-upload request path accepts an excessively long multipart filename without an effective size bound, exhausting server processing capacity. A network-reachable upload endpoint is required; successful exploitation makes the application unresponsive without reported data access or modification.
The record
- CVE
- CVE-2025-0187
- Published
- Mar 20, 2025
- Updated
- Mar 20, 2025
- Vendor
- Gradio
- Product
- Gradio
- Classifications
- CWE-400, T1499.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 20, 2025CVE publishedPublication date reported by the CVE source.
- Mar 20, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=unspecified <=latest
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- Oversized multipart filename proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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