FKIE_CVE-2025-59340

Vulnerability from fkie_nvd - Published: 2025-09-17 20:15 - Updated: 2026-06-17 09:45
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Summary
jinjava is a Java-based template engine based on django template syntax, adapted to render jinja templates. Priori to 2.8.1, by using mapper.getTypeFactory().constructFromCanonical(), it is possible to instruct the underlying ObjectMapper to deserialize attacker-controlled input into arbitrary classes. This enables the creation of semi-arbitrary class instances without directly invoking restricted methods or class literals. As a result, an attacker can escape the sandbox and instantiate classes such as java.net.URL, opening up the ability to access local files and URLs(e.g., file:///etc/passwd). With further chaining, this primitive can potentially lead to remote code execution (RCE). This vulnerability is fixed in 2.8.1.
References
security-advisories@github.comhttps://github.com/HubSpot/jinjava/commit/66df351e7e8ad71ca04dcacb4b65782af820b8b1Patch
security-advisories@github.comhttps://github.com/HubSpot/jinjava/releases/tag/jinjava-2.8.1Release Notes
security-advisories@github.comhttps://github.com/HubSpot/jinjava/security/advisories/GHSA-m49c-g9wr-hv6vVendor Advisory
Impacted products
Vendor Product Version
hubspot jinjava *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "jinjava",
          "vendor": "HubSpot",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.8.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hubspot:jinjava:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D319ECCB-C302-47EE-9354-E3F59DE13259",
              "versionEndExcluding": "2.8.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "jinjava is a Java-based template engine based on django template syntax, adapted to render jinja templates. Priori to 2.8.1, by using mapper.getTypeFactory().constructFromCanonical(), it is possible to instruct the underlying ObjectMapper to deserialize attacker-controlled input into arbitrary classes. This enables the creation of semi-arbitrary class instances without directly invoking restricted methods or class literals. As a result, an attacker can escape the sandbox and instantiate classes such as java.net.URL, opening up the ability to access local files and URLs(e.g., file:///etc/passwd). With further chaining, this primitive can potentially lead to remote code execution (RCE). This vulnerability is fixed in 2.8.1."
    },
    {
      "lang": "es",
      "value": "jinjava es un motor de plantillas basado en Java, basado en la sintaxis de plantillas de Django, adaptado para renderizar plantillas Jinja. Anterior a 2.8.1, al usar mapper.getTypeFactory().constructFromCanonical(), es posible instruir al ObjectMapper subyacente para deserializar la entrada controlada por el atacante en clases arbitrarias. Esto permite la creaci\u00f3n de instancias de clases semi-arbitrarias sin invocar directamente m\u00e9todos restringidos o literales de clase. Como resultado, un atacante puede escapar de la sandbox e instanciar clases como java.net.URL, abriendo la capacidad de acceder a archivos locales y URLs (por ejemplo, file:///etc/p4sswd). Con un encadenamiento adicional, esta primitiva puede potencialmente conducir a la ejecuci\u00f3n remota de c\u00f3digo (RCE). Esta vulnerabilidad est\u00e1 corregida en 2.8.1."
    }
  ],
  "id": "CVE-2025-59340",
  "lastModified": "2026-06-17T09:45:56.163",
  "metrics": {
    "cvssMetricV31": [
      {
        "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": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 10.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 6.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-59340",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-09-18T15:45:18.654916Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-09-17T20:15:36.430",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/HubSpot/jinjava/commit/66df351e7e8ad71ca04dcacb4b65782af820b8b1"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/HubSpot/jinjava/releases/tag/jinjava-2.8.1"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/HubSpot/jinjava/security/advisories/GHSA-m49c-g9wr-hv6v"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1336"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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