CVE-2026-49993

Name: CVE-2026-49993
Creator: NVD / NIST
Published: 2026-06-12T14:16:32.65+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2026-49993 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

Nuxt is an open-source web development framework for Vue.js. In @nuxt/rspack-builder and @nuxt/webpack-builder from versions 3.15.4 to before 3.21.7 and 4.0.0 to before 4.4.7, there is an incomplete fix for GHSA-6m52-m754-pw2g. Source code may still be stolen during dev when using the webpack / rspack builder if the dev server is bound to a non-loopback address (e.g. nuxt dev --host) and the developer opens a malicious site on the same network. This issue has been patched in versions 3.21.7 and 4.4.7.

Metrics

CVSS 3.1

5.7/10

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

CVSS 4.0

5.9/10

CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/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

EPSS Probability

0.28%

19.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-749

Affected Software

Vendor	Product	Versions
Nuxt	Nuxt\/Rspack-Builder	>= 3.15.4, < 3.21.7
Nuxt	Nuxt\/Rspack-Builder	>= 4.0.0, < 4.4.7
Nuxt	Nuxt\/Webpack-Builder	>= 3.15.4, < 3.21.7
Nuxt	Nuxt\/Webpack-Builder	>= 4.0.0, < 4.4.7

References

https://github.com/nuxt/nuxt/commit/77187ee4015e9267fb464951542a3e09e8b5fa05Patch
https://github.com/nuxt/nuxt/commit/e351de943e82db16970618b60dc7fdbaa58630f3Patch
https://github.com/nuxt/nuxt/pull/35200Issue Tracking
https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2gExploit, Mitigation, Patch, Vendor Advisory
https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5Exploit, Mitigation, Patch, Vendor Advisory
https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2gExploit, Mitigation, Patch, Vendor Advisory
https://github.com/nuxt/nuxt/security/advisories/GHSA-x6qj-4h56-5rj5Exploit, Mitigation, Patch, Vendor Advisory

Timeline

Published: Jun 12, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-49993?

How severe is CVE-2026-49993?

CVE-2026-49993 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2026-49993?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-49993?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST