FKIE_CVE-2026-41067

Vulnerability from fkie_nvd - Published: 2026-04-24 17:16 - Updated: 2026-06-17 10:46
Severity
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
Astro is a web framework. Prior to 6.1.6, the defineScriptVars function in Astro's server-side rendering pipeline uses a case-sensitive regex /<\/script>/g to sanitize values injected into inline <script> tags via the define:vars directive. HTML parsers close <script> elements case-insensitively and also accept whitespace or / before the closing >, allowing an attacker to bypass the sanitization with payloads like </Script>, </script >, or </script/> and inject arbitrary HTML/JavaScript. This vulnerability is fixed in 6.1.6.
References
security-advisories@github.comhttps://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcffExploit, Mitigation, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcffExploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
astro astro *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "astro",
          "vendor": "withastro",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.1.6"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "F1E12104-0666-4579-82D6-3805F521F36A",
              "versionEndExcluding": "6.1.6",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Astro is a web framework. Prior to 6.1.6, the defineScriptVars function in Astro\u0027s server-side rendering pipeline uses a case-sensitive regex /\u003c\\/script\u003e/g to sanitize values injected into inline \u003cscript\u003e tags via the define:vars directive. HTML parsers close \u003cscript\u003e elements case-insensitively and also accept whitespace or / before the closing \u003e, allowing an attacker to bypass the sanitization with payloads like \u003c/Script\u003e, \u003c/script \u003e, or \u003c/script/\u003e and inject arbitrary HTML/JavaScript. This vulnerability is fixed in 6.1.6."
    }
  ],
  "id": "CVE-2026-41067",
  "lastModified": "2026-06-17T10:46:07.110",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-41067",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-24T17:27:06.343054Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-24T17:16:21.083",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcff"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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        "Mitigation",
        "Vendor Advisory"
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      "url": "https://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcff"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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