FKIE_CVE-2025-66020

Vulnerability from fkie_nvd - Published: 2025-11-26 02:15 - Updated: 2026-10-23 22:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Valibot helps validate data using a schema. In versions from 0.31.0 to 1.1.0, the EMOJI_REGEX used in the emoji action is vulnerable to a Regular Expression Denial of Service (ReDoS) attack. A short, maliciously crafted string (e.g., <100 characters) can cause the regex engine to consume excessive CPU time (minutes), leading to a Denial of Service (DoS) for the application. This issue has been patched in version 1.2.0.
References
security-advisories@github.comhttps://github.com/open-circle/valibot/commit/cfb799db301a953a0950d5c05a34a3ab121262dc
security-advisories@github.comhttps://github.com/open-circle/valibot/security/advisories/GHSA-vqpr-j7v3-hqw9
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "valibot",
          "vendor": "open-circle",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 0.31.0, \u003c 1.2.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Valibot helps validate data using a schema. In versions from 0.31.0 to 1.1.0, the EMOJI_REGEX used in the emoji action is vulnerable to a Regular Expression Denial of Service (ReDoS) attack. A short, maliciously crafted string (e.g., \u003c100 characters) can cause the regex engine to consume excessive CPU time (minutes), leading to a Denial of Service (DoS) for the application. This issue has been patched in version 1.2.0."
    },
    {
      "lang": "es",
      "value": "Valibot ayuda a validar datos usando un esquema. En las versiones de 0.31.0 a 1.1.0, la EMOJI_REGEX utilizada en la acci\u00f3n de emoji es vulnerable a un ataque de Denegaci\u00f3n de Servicio por Expresiones Regulares (ReDoS). Una cadena corta y maliciosamente elaborada (por ejemplo, anterior a 100 caracteres) puede hacer que el motor de expresiones regulares consuma un tiempo excesivo de CPU (minutos), lo que lleva a una Denegaci\u00f3n de Servicio (DoS) para la aplicaci\u00f3n. Este problema ha sido parcheado en la versi\u00f3n 1.2.0."
    }
  ],
  "id": "CVE-2025-66020",
  "lastModified": "2026-10-23T22:10:00.160",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-66020",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-11-26T14:15:40.424558Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-11-26T02:15:49.540",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/open-circle/valibot/commit/cfb799db301a953a0950d5c05a34a3ab121262dc"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/open-circle/valibot/security/advisories/GHSA-vqpr-j7v3-hqw9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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