Vulnerability-Lookup

CVE-2026-123808 (GCVE-0-2026-123808)

Vulnerability from cvelistv5 – Published: 2026-11-09 20:41 – Updated: 2026-11-09 20:41

Title

Nuxt UI: UAuthForm / UForm SSR markup omits `method`, leaking credentials via GET if submitted before hydration

Summary

Nuxt UI is an intuitive Vue UI library powered by Reka UI and Tailwind CSS. Prior to 4.8.1, the server-rendered form element produced by UForm in src/runtime/components/Form.vue omits the method and action attributes and relies solely on the hydrated @submit.prevent handler to stop native submission. UAuthForm composes UForm and can render named credential fields, including an input with type password, inside the same markup. If a user submits before Vue hydration completes, or when the client bundle is blocked or unavailable, the browser performs its default GET submission and serializes the named fields into the current URL query string. The credentials can then appear in the address bar, browser history, reverse-proxy, CDN, or WAF request logs, and Referer headers sent with same-origin subresource requests. This issue is fixed in version 4.8.1.

Severity

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
CWE-598 - Use of GET Request Method With Sensitive Query Strings

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7791 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/nuxt/ui/security/advisories/GH…	x_refsource_CONFIRM
https://github.com/nuxt/ui/pull/6512	x_refsource_MISC
https://github.com/nuxt/ui/commit/7a0825ad6a17627…	x_refsource_MISC
https://github.com/nuxt/ui/releases/tag/v4.8.1	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
nuxt	ui	Affected: < 4.8.1	guessed

Show details on NVD website

JSON

To clipboard

{
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        {
          "product": "ui",
          "vendor": "nuxt",
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        }
      ],
      "metrics": [
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
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              "lang": "en",
              "type": "CWE"
            }
          ]
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        {
          "descriptions": [
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              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-09T20:41:49.528Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
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          "name": "https://github.com/nuxt/ui/security/advisories/GHSA-gj2h-2fpw-fhv9",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nuxt/ui/security/advisories/GHSA-gj2h-2fpw-fhv9"
        },
        {
          "name": "https://github.com/nuxt/ui/pull/6512",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nuxt/ui/pull/6512"
        },
        {
          "name": "https://github.com/nuxt/ui/commit/7a0825ad6a17627ce4c6dd860df3cebb7cf1d813",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nuxt/ui/commit/7a0825ad6a17627ce4c6dd860df3cebb7cf1d813"
        },
        {
          "name": "https://github.com/nuxt/ui/releases/tag/v4.8.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nuxt/ui/releases/tag/v4.8.1"
        }
      ],
      "source": {
        "advisory": "GHSA-gj2h-2fpw-fhv9",
        "discovery": "UNKNOWN"
      },
      "title": "Nuxt UI: UAuthForm / UForm SSR markup omits `method`, leaking credentials via GET if submitted before hydration"
    }
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    "datePublished": "2026-11-09T20:41:49.528Z",
    "dateReserved": "2026-11-06T15:27:56.226Z",
    "dateUpdated": "2026-11-09T20:41:49.528Z",
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        "affected": [
          {
            "affectedData": [
              {
                "product": "ui",
                "vendor": "nuxt",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 4.8.1"
                  }
                ]
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            ],
            "source": "security-advisories@github.com"
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Nuxt UI is an intuitive Vue UI library powered by Reka UI and Tailwind CSS. Prior to 4.8.1, the server-rendered form element produced by UForm in src/runtime/components/Form.vue omits the method and action attributes and relies solely on the hydrated @submit.prevent handler to stop native submission. UAuthForm composes UForm and can render named credential fields, including an input with type password, inside the same markup. If a user submits before Vue hydration completes, or when the client bundle is blocked or unavailable, the browser performs its default GET submission and serializes the named fields into the current URL query string. The credentials can then appear in the address bar, browser history, reverse-proxy, CDN, or WAF request logs, and Referer headers sent with same-origin subresource requests. This issue is fixed in version 4.8.1."
          }
        ],
        "id": "CVE-2026-123808",
        "lastModified": "2026-11-09T22:18:36.823",
        "metrics": {
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                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.6,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-11-09T22:18:36.823",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/nuxt/ui/commit/7a0825ad6a17627ce4c6dd860df3cebb7cf1d813"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/nuxt/ui/pull/6512"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/nuxt/ui/releases/tag/v4.8.1"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/nuxt/ui/security/advisories/GHSA-gj2h-2fpw-fhv9"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-200"
              },
              {
                "lang": "en",
                "value": "CWE-598"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}

FKIE_CVE-2026-123808

Vulnerability from fkie_nvd - Published: 2026-11-09 22:18 - Updated: 2026-11-09 22:18

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/nuxt/ui/commit/7a0825ad6a17627ce4c6dd860df3cebb7cf1d813
	security-advisories@github.com	https://github.com/nuxt/ui/pull/6512
	security-advisories@github.com	https://github.com/nuxt/ui/releases/tag/v4.8.1
	security-advisories@github.com	https://github.com/nuxt/ui/security/advisories/GHSA-gj2h-2fpw-fhv9

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "ui",
          "vendor": "nuxt",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.8.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nuxt UI is an intuitive Vue UI library powered by Reka UI and Tailwind CSS. Prior to 4.8.1, the server-rendered form element produced by UForm in src/runtime/components/Form.vue omits the method and action attributes and relies solely on the hydrated @submit.prevent handler to stop native submission. UAuthForm composes UForm and can render named credential fields, including an input with type password, inside the same markup. If a user submits before Vue hydration completes, or when the client bundle is blocked or unavailable, the browser performs its default GET submission and serializes the named fields into the current URL query string. The credentials can then appear in the address bar, browser history, reverse-proxy, CDN, or WAF request logs, and Referer headers sent with same-origin subresource requests. This issue is fixed in version 4.8.1."
    }
  ],
  "id": "CVE-2026-123808",
  "lastModified": "2026-11-09T22:18:36.823",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-11-09T22:18:36.823",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nuxt/ui/commit/7a0825ad6a17627ce4c6dd860df3cebb7cf1d813"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nuxt/ui/pull/6512"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nuxt/ui/releases/tag/v4.8.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/nuxt/ui/security/advisories/GHSA-gj2h-2fpw-fhv9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        },
        {
          "lang": "en",
          "value": "CWE-598"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

GHSA-GJ2H-2FPW-FHV9

Vulnerability from github – Published: 2026-07-02 20:16 – Updated: 2026-08-04 21:55

Summary

@nuxt/ui: UAuthForm / UForm SSR markup omits `method`, leaking credentials via GET if submitted before hydration

Details

Summary

UForm and UAuthForm render a server-side <form> element with no method and no action attribute, relying on a hydrated @submit.prevent handler to intercept submission. If a user submits the form before Vue hydration has attached the handler (autofill plus Enter on a slow network, JS bundle blocked by CSP or CDN failure, etc.), the browser performs the native default: a GET to the current URL with every named field, including <input type="password">, serialised into the query string.

Details

src/runtime/components/Form.vue (around the template's <form> element) emits:

<component
  :is="parentBus ? 'div' : 'form'"
  :id="formId"
  ref="formRef"
  :class="ui({ class: [uiProp?.base, props.class] })"
  @submit.prevent="onSubmitWrapper"
>

No method, no action. @submit.prevent is the only thing stopping native submission, and it only exists after hydration. UAuthForm composes UForm and inherits the same shape.

The SSR snapshot of UAuthForm (test/components/__snapshots__/AuthForm.spec.ts.snap) shows the rendered markup, with <input type="password" name="password"> inside a <form> that has no method.

Proof of concept

Reported by @nimonian:

Create a minimal Nuxt app with a UAuthForm.
Build for production and visit in a browser with network throttling at 4G or slower.
Enter credentials.
Submit (or let autofill + Enter fire before hydration).

The URL becomes /login?email=…&password=…. Reproducible deterministically in Playwright by triggering submit immediately on load.

Impact

Any application using UAuthForm (or UForm with credential-shaped fields) as documented. The cleartext password lands in:

the address bar,
window.history,
the Referer header of every same-origin subresource fetched from the resulting URL,
access logs of any reverse proxy, CDN, or WAF that records request URLs.

Patch

Default the rendered <form> to method="post" so the pre-hydration fallback submits as POST rather than GET. Vue's @submit.prevent still intercepts the hydrated case; the attribute only matters in the race window. Applications that explicitly want native GET submission can opt back in by passing method="get".

Credit

Reported by @nimonian. Originally filed as GHSA-92g7-2fpq-hmq8 against nuxt/nuxt; moved here because the affected code lives in @nuxt/ui.

Severity

6.9 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@nuxt/ui"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-598"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-02T20:16:12Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\n\n`UForm` and `UAuthForm` render a server-side `\u003cform\u003e` element with no `method` and no `action` attribute, relying on a hydrated `@submit.prevent` handler to intercept submission. If a user submits the form before Vue hydration has attached the handler (autofill plus Enter on a slow network, JS bundle blocked by CSP or CDN failure, etc.), the browser performs the native default: a `GET` to the current URL with every named field, including `\u003cinput type=\"password\"\u003e`, serialised into the query string.\n\n### Details\n\n`src/runtime/components/Form.vue` (around the template\u0027s `\u003cform\u003e` element) emits:\n\n```vue\n\u003ccomponent\n  :is=\"parentBus ? \u0027div\u0027 : \u0027form\u0027\"\n  :id=\"formId\"\n  ref=\"formRef\"\n  :class=\"ui({ class: [uiProp?.base, props.class] })\"\n  @submit.prevent=\"onSubmitWrapper\"\n\u003e\n```\n\nNo `method`, no `action`. `@submit.prevent` is the only thing stopping native submission, and it only exists after hydration. `UAuthForm` composes `UForm` and inherits the same shape.\n\nThe SSR snapshot of `UAuthForm` (`test/components/__snapshots__/AuthForm.spec.ts.snap`) shows the rendered markup, with `\u003cinput type=\"password\" name=\"password\"\u003e` inside a `\u003cform\u003e` that has no `method`.\n\n### Proof of concept\n\nReported by @nimonian:\n\n1. Create a minimal Nuxt app with a `UAuthForm`.\n2. Build for production and visit in a browser with network throttling at 4G or slower.\n3. Enter credentials.\n4. Submit (or let autofill + Enter fire before hydration).\n\nThe URL becomes `/login?email=\u2026\u0026password=\u2026`. Reproducible deterministically in Playwright by triggering submit immediately on `load`.\n\n### Impact\n\nAny application using `UAuthForm` (or `UForm` with credential-shaped fields) as documented. The cleartext password lands in:\n\n- the address bar,\n- `window.history`,\n- the `Referer` header of every same-origin subresource fetched from the resulting URL,\n- access logs of any reverse proxy, CDN, or WAF that records request URLs.\n\n### Patch\n\nDefault the rendered `\u003cform\u003e` to `method=\"post\"` so the pre-hydration fallback submits as POST rather than GET. Vue\u0027s `@submit.prevent` still intercepts the hydrated case; the attribute only matters in the race window. Applications that explicitly want native GET submission can opt back in by passing `method=\"get\"`.\n\n### Credit\n\nReported by @nimonian. Originally filed as `GHSA-92g7-2fpq-hmq8` against `nuxt/nuxt`; moved here because the affected code lives in `@nuxt/ui`.",
  "id": "GHSA-gj2h-2fpw-fhv9",
  "modified": "2026-08-04T21:55:59Z",
  "published": "2026-07-02T20:16:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/ui/security/advisories/GHSA-gj2h-2fpw-fhv9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/ui/pull/6512"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nuxt/ui"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nuxt/ui/releases/tag/v4.8.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@nuxt/ui: UAuthForm / UForm SSR markup omits `method`, leaking credentials via GET if submitted before hydration"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-123808 (GCVE-0-2026-123808)

FKIE_CVE-2026-123808

GHSA-GJ2H-2FPW-FHV9

Summary

Details

Proof of concept

Impact

Patch

Credit

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour