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Vulnerability record · CVE-2025-48985 · published 7 November 2025

CVE-2025-48985: Vercel ai improper input validation vulnerability

Vercel · Ai

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

5.3 CVSS 3.1 Medium EPSS 0.27% · top 83.5% CWE-20 · Improper input validation
5.3CVSS 3.1 base score
0.27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/vercel/ai/commit/930399bb9839a8baf3d349614106d78268775eed Patch
https://vercel.com/changelog/cve-2025-48985-input-validation-bypass-on-ai-sdk Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-48985), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.