Vulnerability-Lookup

GHSA-JJM6-P2M9-9W4X

Vulnerability from github – Published: 2026-10-22 16:51 – Updated: 2026-10-22 16:51

Summary

Nuxt: Incomplete fix for GHSA-934w-87qh-qr26: a `javascript:` URL prefixed with an ASCII control character executes from `<NuxtLink>` when `pages` is disabled

Details

Impact

An application that renders <NuxtLink :to="..."> with a value it does not control can be made to render an anchor whose href executes script in the application's origin when clicked.

This is an incomplete fix for GHSA-934w-87qh-qr26 (CVE-2026-53722). It only affects applications running without a pages/ directory, where pages resolves to false and Nuxt registers its own router in place of vue-router. Applications using vue-router are not affected.

Prefixing javascript: with an ASCII C0 control character, for example %01, meant the value was not recognised as having a protocol. It was classified as an internal route and so never reached the protocol check added in GHSA-934w-87qh-qr26, and the router used for pages: false passed it through to the rendered href unchanged. Browsers strip the leading control character and run the result as a script URL.

Both <NuxtLink custom> and the default anchor are affected, and the href is present in the server-rendered HTML.

Mitigating factors

The application must have pages disabled (no pages/ directory, or pages: false).
The application must bind untrusted input to :to.
A victim must click the rendered link.

Affected versions

nuxt <4.6.0, including all Nuxt 3 releases. Versions before 4.4.7 and 3.21.7 are also affected by GHSA-934w-87qh-qr26.

Patches

Fixed in nuxt@4.6.0. Nuxt 3 reached end of life on 31 July 2026 and will not receive a fix.

Anchor href values are now checked for script-capable protocols wherever they are rendered, including the router used when pages is disabled. Protocol detection also moved to the platform URL parser, so a URL is classified the same way the browser will read it.

Workarounds

Upgrade to nuxt@4.6.0 or later. If you cannot upgrade, including on Nuxt 3, validate values before binding them to :to, for example by rejecting anything that is not a path beginning with a single /.

Severity

2.3 (Low)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "nuxt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.6.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-114130"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-22T16:51:37Z",
    "nvd_published_at": "2026-10-21T18:17:25Z",
    "severity": "LOW"
  },
  "details": "## Impact\n\nAn application that renders `\u003cNuxtLink :to=\"...\"\u003e` with a value it does not control can be made to render an anchor whose `href` executes script in the application\u0027s origin when clicked.\n\nThis is an incomplete fix for [GHSA-934w-87qh-qr26](https://github.com/nuxt/nuxt/security/advisories/GHSA-934w-87qh-qr26) (CVE-2026-53722). It only affects applications running without a `pages/` directory, where `pages` resolves to `false` and Nuxt registers its own router in place of vue-router. Applications using vue-router are not affected.\n\nPrefixing `javascript:` with an ASCII C0 control character, for example `%01`, meant the value was not recognised as having a protocol. It was classified as an internal route and so never reached the protocol check added in GHSA-934w-87qh-qr26, and the router used for `pages: false` passed it through to the rendered `href` unchanged. Browsers strip the leading control character and run the result as a script URL.\n\nBoth `\u003cNuxtLink custom\u003e` and the default anchor are affected, and the `href` is present in the server-rendered HTML.\n\n## Mitigating factors\n\n- The application must have `pages` disabled (no `pages/` directory, or `pages: false`).\n- The application must bind untrusted input to `:to`.\n- A victim must click the rendered link.\n\n## Affected versions\n\n`nuxt` `\u003c4.6.0`, including all Nuxt 3 releases. Versions before `4.4.7` and `3.21.7` are also affected by GHSA-934w-87qh-qr26.\n\n## Patches\n\nFixed in `nuxt@4.6.0`. Nuxt 3 reached end of life on 31 July 2026 and will not receive a fix.\n\nAnchor `href` values are now checked for script-capable protocols wherever they are rendered, including the router used when `pages` is disabled. Protocol detection also moved to the platform `URL` parser, so a URL is classified the same way the browser will read it.\n\n## Workarounds\n\nUpgrade to `nuxt@4.6.0` or later. If you cannot upgrade, including on Nuxt 3, validate values before binding them to `:to`, for example by rejecting anything that is not a path beginning with a single `/`.",
  "id": "GHSA-jjm6-p2m9-9w4x",
  "modified": "2026-10-22T16:51:37Z",
  "published": "2026-10-22T16:51:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-jjm6-p2m9-9w4x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114130"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/nuxt/pull/36459"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/nuxt/commit/355ed9565127ff9b1453deb7160059ed55b3cb85"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/nuxt/commit/df46569d5d3c7a7799de54c328634168fbae70bb"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nuxt/nuxt"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/nuxt/releases/tag/v4.6.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Nuxt: Incomplete fix for GHSA-934w-87qh-qr26: a `javascript:` URL prefixed with an ASCII control character executes from `\u003cNuxtLink\u003e` when `pages` is disabled"
}

CVE-2026-114130 (GCVE-0-2026-114130)

Vulnerability from cvelistv5 – Published: 2026-10-21 17:37 – Updated: 2026-10-21 17:37

Title

Nuxt: Incomplete fix for GHSA-934w-87qh-qr26: a `javascript:` URL prefixed with an ASCII control character executes from `<NuxtLink>` when `pages` is disabled

Summary

Nuxt is an open-source web development framework for Vue.js. Prior to 4.6.0, an incomplete fix for CVE-2026-53722 allows an application with pages disabled to render a script-capable URL through NuxtLink when attacker-controlled input bound to to is prefixed with an ASCII C0 control character. The no-pages router classifies the value as an internal route before the earlier protocol check and passes it to the rendered anchor href; browsers remove the leading control character and interpret the remaining javascript: URL. The default anchor and NuxtLink custom output are affected, the unsafe href is present in server-rendered HTML, and a victim must click the link for script to execute in the application's origin. This issue is fixed in version 4.6.0.

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7761 records in the last 180 days details

References

5 references

URL	Tags
https://github.com/nuxt/nuxt/security/advisories/…	x_refsource_CONFIRM
https://github.com/nuxt/nuxt/pull/36459	x_refsource_MISC
https://github.com/nuxt/nuxt/commit/355ed9565127f…	x_refsource_MISC
https://github.com/nuxt/nuxt/commit/df46569d5d3c7…	x_refsource_MISC
https://github.com/nuxt/nuxt/releases/tag/v4.6.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
nuxt	nuxt	Affected: < 4.6.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "nuxt",
          "vendor": "nuxt",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.6.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Nuxt is an open-source web development framework for Vue.js. Prior to 4.6.0, an incomplete fix for CVE-2026-53722 allows an application with pages disabled to render a script-capable URL through NuxtLink when attacker-controlled input bound to to is prefixed with an ASCII C0 control character. The no-pages router classifies the value as an internal route before the earlier protocol check and passes it to the rendered anchor href; browsers remove the leading control character and interpret the remaining javascript: URL. The default anchor and NuxtLink custom output are affected, the unsafe href is present in server-rendered HTML, and a victim must click the link for script to execute in the application\u0027s origin. This issue is fixed in version 4.6.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 2.3,
            "baseSeverity": "LOW",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T17:37:58.400Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nuxt/nuxt/security/advisories/GHSA-jjm6-p2m9-9w4x",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nuxt/nuxt/security/advisories/GHSA-jjm6-p2m9-9w4x"
        },
        {
          "name": "https://github.com/nuxt/nuxt/pull/36459",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nuxt/nuxt/pull/36459"
        },
        {
          "name": "https://github.com/nuxt/nuxt/commit/355ed9565127ff9b1453deb7160059ed55b3cb85",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nuxt/nuxt/commit/355ed9565127ff9b1453deb7160059ed55b3cb85"
        },
        {
          "name": "https://github.com/nuxt/nuxt/commit/df46569d5d3c7a7799de54c328634168fbae70bb",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nuxt/nuxt/commit/df46569d5d3c7a7799de54c328634168fbae70bb"
        },
        {
          "name": "https://github.com/nuxt/nuxt/releases/tag/v4.6.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nuxt/nuxt/releases/tag/v4.6.0"
        }
      ],
      "source": {
        "advisory": "GHSA-jjm6-p2m9-9w4x",
        "discovery": "UNKNOWN"
      },
      "title": "Nuxt: Incomplete fix for GHSA-934w-87qh-qr26: a `javascript:` URL prefixed with an ASCII control character executes from `\u003cNuxtLink\u003e` when `pages` is disabled"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-114130",
    "datePublished": "2026-10-21T17:37:58.400Z",
    "dateReserved": "2026-10-20T21:53:58.473Z",
    "dateUpdated": "2026-10-21T17:37:58.400Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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