FKIE_CVE-2021-39126

Vulnerability from fkie_nvd - Published: 2021-10-21 03:15 - Updated: 2026-06-17 04:03
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Summary
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.
References
security@atlassian.comhttps://jira.atlassian.com/browse/JRASERVER-71806Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://jira.atlassian.com/browse/JRASERVER-71806Issue Tracking, Patch, Vendor Advisory
Impacted products
Vendor Product Version
atlassian jira_data_center *
atlassian jira_data_center *
atlassian jira_server *
atlassian jira_server *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Jira Server",
          "vendor": "Atlassian",
          "versions": [
            {
              "lessThan": "8.5.10",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Jira Data Center",
          "vendor": "Atlassian",
          "versions": [
            {
              "lessThan": "8.5.10",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@atlassian.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F89DD2DF-D358-4CD8-BF56-D17277609DA3",
              "versionEndExcluding": "8.5.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "382C231B-EC03-4D82-B215-402321C813E3",
              "versionEndExcluding": "8.13.1",
              "versionStartIncluding": "8.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D94F90D0-9F69-411F-8072-E882ED15D4D5",
              "versionEndExcluding": "8.5.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0E4D5E0B-A456-4C6C-9AB5-A6E5645677C9",
              "versionEndExcluding": "8.13.1",
              "versionStartIncluding": "8.6.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "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\u0027s 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 trav\u00e9s de una vulnerabilidad de falsificaci\u00f3n de solicitud de sitio cruzado (CSRF), a ra\u00edz de una vulnerabilidad de divulgaci\u00f3n de informaci\u00f3n en las cabeceras de referencia que revela el token CSRF de un usuario. Las versiones afectadas son anteriores a la versi\u00f3n 8.5.10, y desde la versi\u00f3n 8.6.0 hasta la 8.13.1"
    }
  ],
  "id": "CVE-2021-39126",
  "lastModified": "2026-06-17T04:03:07.237",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-39126",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-10-10T16:05:55.865701Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2021-10-21T03:15:07.133",
  "references": [
    {
      "source": "security@atlassian.com",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://jira.atlassian.com/browse/JRASERVER-71806"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://jira.atlassian.com/browse/JRASERVER-71806"
    }
  ],
  "sourceIdentifier": "security@atlassian.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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