Improper input validation in vercel AI SDK
Priority LOW 24CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
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
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00284 21st percentileScored 2026-11-08
Fix Fixed AI SDK (Vercel): 5.1.0-beta.9, 5.0.52ai (npm): 5.0.52, 5.1.0-beta.9
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| vercel | AI SDK | 5.0.51 – 5.0.51; 5.1.0-beta.8 – 5.1.0-beta.8 | 5.1.0-beta.9, 5.0.52 | Patch available | CNA |
| — | ai (npm) | before 5.0.52 | 5.0.52 | Patch available | GHSA-rwvc-j5jr-mgvh |
| — | ai (npm) | 5.1.0-beta.0 to before 5.1.0-beta.9 | 5.1.0-beta.9 | Patch available | GHSA-rwvc-j5jr-mgvh |
- AI SDK Vendorvercel Affected 5.0.51 – 5.0.51; 5.1.0-beta.8 – 5.1.0-beta.8 Fixed in 5.1.0-beta.9, 5.0.52 Patch available CNA
- ai (npm) Vendor— Affected before 5.0.52 Fixed in 5.0.52 Patch available GHSA-rwvc-j5jr-mgvh
- ai (npm) Vendor— Affected 5.1.0-beta.0 to before 5.1.0-beta.9 Fixed in 5.1.0-beta.9 Patch available GHSA-rwvc-j5jr-mgvh
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vercel:ai:*:*:*:*:*:*:*:* | before 5.0.52 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta0:*:*:*:*:*:* | 5.1.0 beta0 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta1:*:*:*:*:*:* | 5.1.0 beta1 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta2:*:*:*:*:*:* | 5.1.0 beta2 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta3:*:*:*:*:*:* | 5.1.0 beta3 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta4:*:*:*:*:*:* | 5.1.0 beta4 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta5:*:*:*:*:*:* | 5.1.0 beta5 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta6:*:*:*:*:*:* | 5.1.0 beta6 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta7:*:*:*:*:*:* | 5.1.0 beta7 | Vulnerable | vercel |
| cpe:2.3:a:vercel:ai:5.1.0:beta8:*:*:*:*:*:* | 5.1.0 beta8 | Vulnerable | vercel |
- cpe:2.3:a:vercel:ai:*:*:*:*:*:*:*:* Versions before 5.0.52 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta0:*:*:*:*:*:* Versions 5.1.0 beta0 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta1:*:*:*:*:*:* Versions 5.1.0 beta1 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta2:*:*:*:*:*:* Versions 5.1.0 beta2 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta3:*:*:*:*:*:* Versions 5.1.0 beta3 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta4:*:*:*:*:*:* Versions 5.1.0 beta4 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta5:*:*:*:*:*:* Versions 5.1.0 beta5 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta6:*:*:*:*:*:* Versions 5.1.0 beta6 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta7:*:*:*:*:*:* Versions 5.1.0 beta7 Vulnerable ·vercel
- cpe:2.3:a:vercel:ai:5.1.0:beta8:*:*:*:*:*:* Versions 5.1.0 beta8 Vulnerable ·vercel
Remediation
- Fix · CNA AI SDK (Vercel) Fixed in 5.1.0-beta.9, 5.0.52
- Fix · GHSA-rwvc-j5jr-mgvh ai (npm) Fixed in 5.0.52 Advisory →
- Fix · GHSA-rwvc-j5jr-mgvh ai (npm) Fixed in 5.1.0-beta.9 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-48985
- 2026-10-03 Alias added: GHSA-rwvc-j5jr-mgvh
References
More vercel Ai vulnerabilities
- TI-2026-07706 vercel ai provider-utils download-blob.ts validateDownloadUrl server-side request forgery CVSS 4.0MEDIUM 6.9
- TI-2026-07707 vercel ai provider-utils response-handler.ts createJsonErrorResponseHandler resource consumption CVSS 4.0MEDIUM 5.3
- TI-2026-07705 vercel ai PR Branch Name Interpolation prettier-on-automerge.yml run os command injection CVSS 4.0LOW 2.3
Sources
- CVE-2025-48985 · CVE Program
- CVE-2025-48985 · NVD
- FIRST EPSS
- GHSA-rwvc-j5jr-mgvh · GitHub Advisory Database · CC BY 4.0
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