CVE-2026-128076: @nuxt nitro-server · Improper Encoding or Escaping of Output
Affects @nuxt nitro-serverSource CVE Database V5
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
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 3.1 |
|---|
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 13 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| nuxtnuxt | Affected
| Fixed in
|
| nuxtnuxt | Affected
| Fixed in
|
| @nuxtnitro-server | Affected
| Fixed in
|
| @nuxtnitro-server | Affected
| Fixed in
|
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.