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CVE-2025-48985

21
FAUCET Score

CVE-2025-48985 is an input validation bypass vulnerability affecting Vercel’s AI SDK, allowing attackers to circumvent filetype whitelists during file uploads. This medium-severity vulnerability (CVSS 5.3) has a low impact on integrity, requiring no user interaction or privileges, and is easily exploitable over the network. While there is no evidence of active exploitation or publicly available exploit code, and minimal community discussion, users are strongly advised to upgrade to versions 5.0.52, 5.1.0-beta.9, or 6.0.0-beta to mitigate the risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.0.52CPE matchmatch criteria
cpe:2.3:a:vercel:ai:*:*:*:*:*:*:*:*
5.1.0CPE matchmatch criteria
cpe:2.3:a:vercel:ai:5.1.0:beta0:*:*:*:*:*:*
5.1.0CPE matchmatch criteria
cpe:2.3:a:vercel:ai:5.1.0:beta1:*:*:*:*:*:*
5.1.0CPE matchmatch criteria
cpe:2.3:a:vercel:ai:5.1.0:beta2:*:*:*:*:*:*
5.1.0CPE matchmatch criteria
cpe:2.3:a:vercel:ai:5.1.0:beta3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 8th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: aiFixed in: 5.0.52
npmpatch availablevia ghsa
Product: aiFixed in: 5.1.0-beta.9

Vendor Advisories (1)

npmGHSA-rwvc-j5jr-mgvhlow

Vercel’s AI SDK's filetype whitelists can be bypassed when uploading files

Nov 7, 2025

References

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