CVE-2025-48068Network attack vector

Source-code disclosure via missing origin validation

Published May 30, 2025 · Updated Jun 13, 2025

Information disclosure in Vercel Next.js 13.0 through 14.2.29 and 15.0.0 through 15.2.1 allows remote attackers to read source code. The development WebSocket server and predictable static-script endpoints accept cross-origin requests without validating the request origin. Exploitation requires an App Router development server to be running and a developer to visit a malicious webpage; production deployments are unaffected.

CVSS severity2.3
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Vercel Next.js 13.0 through 14.2.29 and 15.0.0 through 15.2.1 allows remote attackers to read source code. The development WebSocket server and predictable static-script endpoints accept cross-origin requests without validating the request origin. Exploitation requires an App Router development server to be running and a developer to visit a malicious webpage; production deployments are unaffected.

The record

CVE
CVE-2025-48068
Published
May 30, 2025
Updated
Jun 13, 2025
Vendor
Vercel
Product
Next.js
Classifications
CWE-1385, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 13.0, < 14.2.30
  2. Affected versionversion=>= 15.0.0, < 15.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vercel · Next.jsversion=>= 13.0, < 14.2.30; version=>= 15.0.0, < 15.2.2

Published CVSS scores

2.3GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1385Missing Origin Validation in WebSockets
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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