CVE-2025-48985
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-07

Last updated on: 2026-02-04

Assigner: HackerOne

Description
A vulnerability in Vercel’s AI SDK has been fixed in versions 5.0.52, 5.1.0-beta.9, and 6.0.0-beta. This issue may have allowed users to bypass filetype whitelists when uploading files. All users are encouraged to upgrade. More details: https://vercel.com/changelog/cve-2025-48985-input-validation-bypass-on-ai-sdk
CVSS Scores
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Meta Information
Published
2025-11-07
Last Modified
2026-02-04
Generated
2026-06-16
AI Q&A
2025-11-07
EPSS Evaluated
2026-06-14
NVD
CVE-2025-48985
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
vercel ai to 5.0.52 (inc)
vercel ai 5.1.0
vercel ai_sdk 6.0.0-beta
vercel ai_sdk 5.0.52
Helpful Resources
Exploitability
CWE
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KEV
KEV Icon
CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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Executive Summary

This vulnerability in Vercel's AI SDK allowed users to bypass filetype whitelists when uploading files, meaning that the system could accept files that were not intended or allowed by the whitelist restrictions. This issue has been fixed in versions 5.0.52, 5.1.0-beta.9, and 6.0.0-beta.

Impact Analysis

The vulnerability could allow unauthorized file uploads by bypassing filetype restrictions, potentially leading to the upload of malicious or unintended files. This could impact the integrity of the system or application using the AI SDK, although the CVSS score indicates a low severity with limited impact on confidentiality, integrity, or availability.

Mitigation Strategies

The immediate step to mitigate this vulnerability is to upgrade Vercel's AI SDK to version 5.0.52, 5.1.0-beta.9, 6.0.0-beta, or later.

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