Is @nuxt/rspack-builder affected by CVE-2026-45670?

npm @nuxt/rspack-builder is affected in >=3.15.4 =4.0.0-alpha.1 <4.4.6.

Is CVE-2026-45670 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

medium

CVE-2026-45670

Q: Is CVE-2026-45670 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

npm · @nuxt/rspack-builder • npm · @nuxt/webpack-builder

Summary

Nuxt: Dev server exposes built source over LAN to malicious sites (incomplete fix for GHSA-4gf7-ff8x-hq99)

Severity: medium
EPSS: 0.2% (p10)
Also known as: GHSA-6m52-m754-pw2g#@nuxt/rspack-builder, GHSA-6m52-m754-pw2g#@nuxt/webpack-builder
Published: 2026-05-19

References

https://github.com/nuxt/nuxt/security/advisories/GHSA-4gf7-ff8x-hq99
https://github.com/nuxt/nuxt/security/advisories/GHSA-6m52-m754-pw2g
https://nvd.nist.gov/vuln/detail/CVE-2026-45670

Related advisories

CVE-2026-49993 — medium · npm/@nuxt/rspack-builder

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.