4.3

CVE-2025-48068: vercel next.js Missing Origin Validation in WebSockets

CVSS: 4.3v3.1MediumAnalyzed
AliasesGHSA-3h52-269p-cp9r
Published 30-05-2025Last modified 13-06-2025
Open JSON

Vulnerability summary

CVE-2025-48068 is a medium (CVSS 4.3) Missing Origin Validation in WebSockets vulnerability in vercel next.js. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.5% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-05-2025
    PublishedVulnerability first disclosed.
  2. 13-06-2025
    Last modifiedVulnerability information updated.

Description

Next.js is a React framework for building full-stack web applications. In versions starting from 13.0 to before 14.2.30 and 15.0.0 to before 15.2.2, Next.js may have allowed limited source code exposure when the dev server was running with the App Router enabled. The vulnerability only affects local development environments and requires the user to visit a malicious webpage while npm run dev is active. This issue has been patched in versions 14.2.30 and 15.2.2.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

0.00 pp

From 0.19% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Npm1 product
  • next≥ 15.0.0, < 15.2.2 | ≥ 13.0, < 14.2.30
Vercel1 product
  • next.js≥ 13.0, < 14.2.30 | ≥ 13.0.0, < 14.2.30 | ≥ 15.0.0, < 15.2.2

2 vendors · 2 products

References

4 links