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CVE-2021-39126

Estado: ModificadaMedia (6.5)—

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to modify various resources via a Cross-Site Request Forgery (CSRF) vulnerability, following an Information Disclosure vulnerability in the referrer headers which discloses a user's CSRF token. The affected versions are before version 8.5.10, and from version 8.6.0 before 8.13.1.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Atlassian — Jira Data CenterAtlassian — Jira Server

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-39126",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-39126",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-10T16:05:55.865701Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
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  },
  "affected": [
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      "affectedData": [
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          "vendor": "Atlassian",
          "product": "Jira Server",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "8.5.10",
              "versionType": "custom"
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              "version": "unspecified",
              "lessThan": "8.13.1",
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        {
          "vendor": "Atlassian",
          "product": "Jira Data Center",
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              "status": "affected",
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              "lessThan": "8.5.10",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "8.6.0",
              "lessThan": "unspecified",
              "versionType": "custom"
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "8.13.1",
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  ],
  "published": "2021-10-21T03:15:07.133",
  "references": [
    {
      "url": "https://jira.atlassian.com/browse/JRASERVER-71806",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security@atlassian.com"
    },
    {
      "url": "https://jira.atlassian.com/browse/JRASERVER-71806",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Affected versions of Atlassian Jira Server and Data Center allow remote attackers to modify various resources via a Cross-Site Request Forgery (CSRF) vulnerability, following an Information Disclosure vulnerability in the referrer headers which discloses a user's CSRF token. The affected versions are before version 8.5.10, and from version 8.6.0 before 8.13.1."
    },
    {
      "lang": "es",
      "value": "Las versiones afectadas de Atlassian Jira Server y Data Center permiten a los atacantes remotos modificar varios recursos a través de una vulnerabilidad de falsificación de solicitud de sitio cruzado (CSRF), a raíz de una vulnerabilidad de divulgación de información en las cabeceras de referencia que revela el token CSRF de un usuario. Las versiones afectadas son anteriores a la versión 8.5.10, y desde la versión 8.6.0 hasta la 8.13.1"
    }
  ],
  "lastModified": "2026-06-17T04:03:07.237",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "8.5.10"
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}