Skip to main content
VulnerabilityPublished

CVE-2026-128076: @nuxt nitro-server · Improper Encoding or Escaping of Output

Affects @nuxt nitro-serverSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 3.1 Low : upgrade to 4.6.4 or 4.0.0 when convenient.

Data as of 13 Nov 2026, 17:49 UTC

CVSS 3.1 base score
3.1Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.13.1
Patch
Available – fixed in 4.6.4, 4.0.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade nuxt and nitro-server to 4.6.4 or 4.0.0.

Affected software

ProductAffectedFixed in
nuxtnuxtAffected
  • >=4.4.6 <4.6.4
Fixed in
  • 4.6.4
nuxtnuxtAffected
  • >=3.21.6 <4.0.0
Fixed in
  • 4.0.0
@nuxtnitro-serverAffected
  • >=4.4.6 <4.6.4
Fixed in
  • 4.6.4
@nuxtnitro-serverAffected
  • >=3.21.6 <4.0.0
Fixed in
  • 4.0.0

AI-suggested

This vulnerability is fixed in @nuxt nitro-server versions 4.0.0 and 4.6.4. Users should upgrade to these versions or later to remediate the issue. No additional mitigation is required if upgrading is performed. Applications not using server components or NuxtIsland, or those that do not cache responses by path alone, are not affected.

Description

CVE-2026-128076 is a low-severity vulnerability in the @nuxt nitro-server framework affecting versions from 3.21.6 up to but not including 4.0.0 and from 4.4.6 up to but not including 4.6.4. It involves improper encoding or escaping of output in the /__nuxt_island path hash, which uses ohash serialization that does not escape quotes in string values or delimiters in object keys. This flaw allows different island-prop tuples to produce the same path, potentially leading to content substitution or script execution if unsafe HTML sinks like v-html or innerHTML are used. The issue is fixed in version 4.6.4.

References

Community reviews

Loading reviews…