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CVE-2025-48985

MEDIUM
5.3
CVSS Score
Published: November 7, 2025 at 12:43 AM UTC
Updated: October 7, 2026 at 09:10 PM UTC
1 product affected across 1 vendorAI SDK

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

AI SDK· Vercel
95%
v < 5.0.525.0.515.1.0 beta05.1.0 beta15.1.0 beta25.1.0 beta35.1.0 beta45.1.0 beta55.1.0 beta65.1.0 beta75.1.0 beta85.1.0-beta.8
Vendor states this is fixed in 5.0.52 (unaffected)
Vendor states this is fixed in 5.1.0-beta.9 (unaffected)
Vendor states this is fixed in 6.0.0-beta.* (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20

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