CVE-2026-33768 (GCVE-0-2026-33768)

Vulnerability from cvelistv5 – Published: 2026-03-24 18:40 – Updated: 2026-03-24 18:53
VLAI?
Title
Astro: Unauthenticated Path Override via `x-astro-path` / `x_astro_path`
Summary
Astro is a web framework. Prior to version 10.0.2, the @astrojs/vercel serverless entrypoint reads the x-astro-path header and x_astro_path query parameter to rewrite the internal request path, with no authentication whatsoever. On deployments without Edge Middleware, this lets anyone bypass Vercel's platform-level path restrictions entirely. The override preserves the original HTTP method and body, so this isn't limited to GET. POST, PUT, DELETE all land on the rewritten path. A Firewall rule blocking /admin/* does nothing when the request comes in as POST /api/health?x_astro_path=/admin/delete-user. This issue has been patched in version 10.0.2.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
  • CWE-862 - Missing Authorization
Assigner
References
Impacted products
Vendor Product Version
withastro astro Affected: < 10.0.2
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33768",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-24T18:53:09.129100Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-24T18:53:24.069Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "astro",
          "vendor": "withastro",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 10.0.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Astro is a web framework. Prior to version 10.0.2, the @astrojs/vercel serverless entrypoint reads the x-astro-path header and x_astro_path query parameter to rewrite the internal request path, with no authentication whatsoever. On deployments without Edge Middleware, this lets anyone bypass Vercel\u0027s platform-level path restrictions entirely. The override preserves the original HTTP method and body, so this isn\u0027t limited to GET. POST, PUT, DELETE all land on the rewritten path. A Firewall rule blocking /admin/* does nothing when the request comes in as POST /api/health?x_astro_path=/admin/delete-user. This issue has been patched in version 10.0.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-441",
              "description": "CWE-441: Unintended Proxy or Intermediary (\u0027Confused Deputy\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-24T18:40:12.549Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/withastro/astro/security/advisories/GHSA-mr6q-rp88-fx84",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/withastro/astro/security/advisories/GHSA-mr6q-rp88-fx84"
        },
        {
          "name": "https://github.com/withastro/astro/pull/15959",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/withastro/astro/pull/15959"
        },
        {
          "name": "https://github.com/withastro/astro/commit/335a204161f5a7293c128db570901d4f8639c6ed",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/withastro/astro/commit/335a204161f5a7293c128db570901d4f8639c6ed"
        },
        {
          "name": "https://github.com/withastro/astro/releases/tag/%40astrojs%2Fvercel%4010.0.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/withastro/astro/releases/tag/%40astrojs%2Fvercel%4010.0.2"
        }
      ],
      "source": {
        "advisory": "GHSA-mr6q-rp88-fx84",
        "discovery": "UNKNOWN"
      },
      "title": "Astro: Unauthenticated Path Override via `x-astro-path` / `x_astro_path`"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33768",
    "datePublished": "2026-03-24T18:40:12.549Z",
    "dateReserved": "2026-03-23T18:30:14.127Z",
    "dateUpdated": "2026-03-24T18:53:24.069Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-33768\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-03-24T19:16:55.653\",\"lastModified\":\"2026-03-26T13:37:30.467\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Astro is a web framework. Prior to version 10.0.2, the @astrojs/vercel serverless entrypoint reads the x-astro-path header and x_astro_path query parameter to rewrite the internal request path, with no authentication whatsoever. On deployments without Edge Middleware, this lets anyone bypass Vercel\u0027s platform-level path restrictions entirely. The override preserves the original HTTP method and body, so this isn\u0027t limited to GET. POST, PUT, DELETE all land on the rewritten path. A Firewall rule blocking /admin/* does nothing when the request comes in as POST /api/health?x_astro_path=/admin/delete-user. This issue has been patched in version 10.0.2.\"},{\"lang\":\"es\",\"value\":\"Astro es un web framework. Antes de la versi\u00f3n 10.0.2, el punto de entrada sin servidor @astrojs/vercel lee la cabecera x-astro-path y el par\u00e1metro de consulta x_astro_path para reescribir la ruta de solicitud interna, sin autenticaci\u00f3n alguna. En despliegues sin Edge Middleware, esto permite a cualquiera eludir por completo las restricciones de ruta a nivel de plataforma de Vercel. La anulaci\u00f3n preserva el m\u00e9todo HTTP y el cuerpo originales, por lo que esto no se limita a GET. POST, PUT, DELETE todos aterrizan en la ruta reescrita. Una regla de cortafuegos que bloquea /admin/* no hace nada cuando la solicitud llega como POST /api/health?x_astro_path=/admin/delete-user. Este problema ha sido parcheado en la versi\u00f3n 10.0.2.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":2.5},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N\",\"baseScore\":9.1,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-441\"},{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:astro:\\\\@astrojs\\\\/vercel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"10.0.2\",\"matchCriteriaId\":\"E77DAFA1-7306-47B7-9524-EBF8F8EE4CDA\"}]}]}],\"references\":[{\"url\":\"https://github.com/withastro/astro/commit/335a204161f5a7293c128db570901d4f8639c6ed\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/withastro/astro/pull/15959\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://github.com/withastro/astro/releases/tag/%40astrojs%2Fvercel%4010.0.2\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Release Notes\"]},{\"url\":\"https://github.com/withastro/astro/security/advisories/GHSA-mr6q-rp88-fx84\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-33768\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-24T18:53:09.129100Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-24T18:53:20.363Z\"}}], \"cna\": {\"title\": \"Astro: Unauthenticated Path Override via `x-astro-path` / `x_astro_path`\", \"source\": {\"advisory\": \"GHSA-mr6q-rp88-fx84\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"withastro\", \"product\": \"astro\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 10.0.2\"}]}], \"references\": [{\"url\": \"https://github.com/withastro/astro/security/advisories/GHSA-mr6q-rp88-fx84\", \"name\": \"https://github.com/withastro/astro/security/advisories/GHSA-mr6q-rp88-fx84\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/withastro/astro/pull/15959\", \"name\": \"https://github.com/withastro/astro/pull/15959\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/withastro/astro/commit/335a204161f5a7293c128db570901d4f8639c6ed\", \"name\": \"https://github.com/withastro/astro/commit/335a204161f5a7293c128db570901d4f8639c6ed\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/withastro/astro/releases/tag/%40astrojs%2Fvercel%4010.0.2\", \"name\": \"https://github.com/withastro/astro/releases/tag/%40astrojs%2Fvercel%4010.0.2\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Astro is a web framework. Prior to version 10.0.2, the @astrojs/vercel serverless entrypoint reads the x-astro-path header and x_astro_path query parameter to rewrite the internal request path, with no authentication whatsoever. On deployments without Edge Middleware, this lets anyone bypass Vercel\u0027s platform-level path restrictions entirely. The override preserves the original HTTP method and body, so this isn\u0027t limited to GET. POST, PUT, DELETE all land on the rewritten path. A Firewall rule blocking /admin/* does nothing when the request comes in as POST /api/health?x_astro_path=/admin/delete-user. This issue has been patched in version 10.0.2.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-441\", \"description\": \"CWE-441: Unintended Proxy or Intermediary (\u0027Confused Deputy\u0027)\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-862\", \"description\": \"CWE-862: Missing Authorization\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-03-24T18:40:12.549Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-33768\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-24T18:53:24.069Z\", \"dateReserved\": \"2026-03-23T18:30:14.127Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-03-24T18:40:12.549Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.