FKIE_CVE-2026-44966

Vulnerability from fkie_nvd - Published: 2026-05-26 22:16 - Updated: 2026-07-24 12:10
Severity
8.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Velocity.js is a JavaScript implementation of the Apache Velocity template engine. In 2.1.5 and earlier, a prototype pollution vulnerability was discovered in velocityjs. This issue occurs during the processing of #set directives in Velocity templates. If an application renders a template controlled by an attacker, it is possible to modify Object.prototype, potentially leading to Denial of Service (DoS) or Remote Code Execution (RCE) depending on the server environment.
References
security-advisories@github.comhttps://github.com/shepherdwind/velocity.js/security/advisories/GHSA-j658-c2gf-x6pqExploit, Vendor Advisory
Impacted products
Vendor Product Version
shepherdwind velocity.js *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "velocity.js",
          "vendor": "shepherdwind",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 2.1.5"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:shepherdwind:velocity.js:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "83F47F23-C6EA-4E90-A77B-D37B77D8C344",
              "versionEndIncluding": "2.1.5",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Velocity.js is a JavaScript implementation of the Apache Velocity template engine. In 2.1.5 and earlier, a prototype pollution vulnerability was discovered in velocityjs. This issue occurs during the processing of #set directives in Velocity templates. If an application renders a template controlled by an attacker, it is possible to modify Object.prototype, potentially leading to Denial of Service (DoS) or Remote Code Execution (RCE) depending on the server environment."
    },
    {
      "lang": "es",
      "value": "Velocity.js es una implementaci\u00f3n JavaScript del motor de plantillas Apache Velocity. En 2.1.5 y versiones anteriores, se descubri\u00f3 una vulnerabilidad de contaminaci\u00f3n de prototipos en velocityjs. Este problema ocurre durante el procesamiento de las directivas #set en las plantillas Velocity. Si una aplicaci\u00f3n renderiza una plantilla controlada por un atacante, es posible modificar Object.prototype, lo que podr\u00eda llevar a una denegaci\u00f3n de servicio (DoS) o a una ejecuci\u00f3n remota de c\u00f3digo (RCE) dependiendo del entorno del servidor."
    }
  ],
  "id": "CVE-2026-44966",
  "lastModified": "2026-07-24T12:10:00.210",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 8.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-44966",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-01T17:04:32.448870Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-26T22:16:43.293",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-j658-c2gf-x6pq"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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