CVE-2026-53721 json
Nuxt: Route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher
published 5mo ago modified 4mo ago also EUVD-2026-36427 , GHSA-mm7m-92g8-7m47
- cvss
- 8.2
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
Nuxt is an open-source web development framework for Vue.js. From versions 3.11.0 to before 3.21.7 and 4.0.0 to before 4.4.7, there is a route-rule middleware bypass via case-sensitivity mismatch between vue-router and the routeRules matcher. This issue has been patched in versions 3.21.7 and 4.4.7.
Patch / fix
- npm nuxt 3.21.7, 4.4.7
- nuxt nuxt 3.21.7, 4.4.7
Is CVE-2026-53721 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 4mo ago
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/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 |
| NVD | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | nuxt | >=4.0.0, <4.4.7 >=3.11.0, <3.21.7 |
4.4.7 3.21.7 |
Affected products
- nuxt nuxt
Classification
References
-
github.com
/nuxt/nuxt/commit/07e39cd6f26e407b4192b7865bd17bc44536b9bb
web, patch
-
github.com
/nuxt/nuxt/commit/3f3e3fa7b5eec8e495f4f8ce0a54813a8875a11e
web, patch
-
github.com
/nuxt/nuxt/security/advisories/GHSA-mm7m-92g8-7m47
web, mitigation, patch, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-53721
advisory
-
github.com
/nuxt/nuxt
package
Sources
- CVE List CVE-2026-53721
- GitHub Advisory GHSA-mm7m-92g8-7m47
- NVD CVE-2026-53721
- Maintainer advisory GHSA-mm7m-92g8-7m47
Fencer Intel 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 nuxt/nuxt 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.