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Fencer Vulns
medium 4.3

CVE-2025-48068 json

Information exposure in Next.js dev server due to lack of origin verification

published 2025-05-28 17 mo ago modified 2026-09-10 59 d ago also EUVD-2025-16359 , GHSA-3h52-269p-cp9r

cvss
4.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

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.

Patch / fix

  • npm next 14.2.30, 15.2.2
  • vercel next.js 14.2.30, 15.2.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-48068 updated cvss 4.3

next.js: Information exposure in Next.js dev server due to lack of origin verification

  • Red Hat Enterprise Linux 7 firefox Red Hat Enterprise Linux 8 firefox, thunderbird
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 firefox, dotnet7.0, dotnet-host, firefox-x11, thunderbird, dotnet-sdk-7.0, +9 more Red Hat Enterprise Linux 10 firefox, thunderbird
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux AI (RHEL AI) rhelai1/ui-rhel9, rhelai1/pathservice-rhel9 Red Hat Trusted Artifact Signer rhtas/rekor-search-ui-rhel9
    affected: workaround, no fix planned “Will not fix”
  • Red Hat streams for Apache Kafka 2 com.github.streamshub-console
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
17 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 2.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
CNA 4.0 2.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
npm next
>=15.0.0, <15.2.2
>=13.0, <14.2.30
15.2.2
14.2.30

Affected products

  • vercel next.js

Classification

Weakness
  • CWE-1385 Missing Origin Validation in WebSockets
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of vercel/next.js published their own advisory on GitHub. Reviewed sources take precedence over it.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.