FKIE_CVE-2021-26086

Vulnerability from fkie_nvd - Published: 2021-08-16 01:15 - Updated: 2026-06-17 03:42
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
Affected versions of Atlassian Jira Server and Data Center allow remote attackers to read particular files via a path traversal vulnerability in the /WEB-INF/web.xml endpoint. The affected versions are before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1.
References
security@atlassian.comhttp://packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.htmlExploit, Third Party Advisory, VDB Entry
security@atlassian.comhttps://jira.atlassian.com/browse/JRASERVER-72695Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.htmlExploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://jira.atlassian.com/browse/JRASERVER-72695Issue Tracking, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26086US Government Resource
Impacted products
Vendor Product Version
atlassian jira_data_center *
atlassian jira_data_center *
atlassian jira_data_center *
atlassian jira_server *
atlassian jira_server *
atlassian jira_server *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Jira Server",
          "vendor": "Atlassian",
          "versions": [
            {
              "lessThan": "8.5.14",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.6",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.16.1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Jira Data Center",
          "vendor": "Atlassian",
          "versions": [
            {
              "lessThan": "8.5.14",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.6",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.16.1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@atlassian.com"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "jira_server",
          "vendor": "atlassian",
          "versions": [
            {
              "lessThan": "8.5.14",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.6",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.16.1",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "jira_server",
          "vendor": "atlassian",
          "versions": [
            {
              "lessThan": "8.5.14",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.6",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.16.1",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "jira_server",
          "vendor": "atlassian",
          "versions": [
            {
              "lessThan": "8.5.14",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.6",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.16.1",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "jira_data_center",
          "vendor": "atlassian",
          "versions": [
            {
              "lessThan": "8.5.14",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.6",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.16.1",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "jira_data_center",
          "vendor": "atlassian",
          "versions": [
            {
              "lessThan": "8.5.14",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.6",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.16.1",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "jira_data_center",
          "vendor": "atlassian",
          "versions": [
            {
              "lessThan": "8.5.14",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.13.6",
              "status": "affected",
              "version": "8.6.0",
              "versionType": "custom"
            },
            {
              "lessThan": "8.16.1",
              "status": "affected",
              "version": "8.14.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "cisaActionDue": "2024-12-03",
  "cisaExploitAdd": "2024-11-12",
  "cisaRequiredAction": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.",
  "cisaVulnerabilityName": "Atlassian Jira Server and Data Center Path Traversal Vulnerability",
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CEEBDB04-3699-4E5C-BF60-7052F6409D1B",
              "versionEndExcluding": "8.5.14",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "940CC48E-EC7D-42E1-838C-011D1C8CEF31",
              "versionEndExcluding": "8.13.6",
              "versionStartIncluding": "8.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CA85B28C-6370-4D3A-A053-AEC6878971B4",
              "versionEndExcluding": "8.16.1",
              "versionStartIncluding": "8.14.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D60CECC8-9041-4339-A764-7D8515C4120D",
              "versionEndExcluding": "8.5.14",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "753A6E31-7EAD-443E-8FC4-D01BB97844D7",
              "versionEndExcluding": "8.13.6",
              "versionStartIncluding": "8.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "703B1E15-8FC1-42F4-953D-0CF16829AB21",
              "versionEndExcluding": "8.16.1",
              "versionStartIncluding": "8.14.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Affected versions of Atlassian Jira Server and Data Center allow remote attackers to read particular files via a path traversal vulnerability in the /WEB-INF/web.xml endpoint. The affected versions are before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1."
    },
    {
      "lang": "es",
      "value": "Las versiones afectadas de Atlassian Jira Server y Data Center, permiten a atacantes remotos leer archivos particulares por medio de una vulnerabilidad de salto de ruta en el endpoint /WEB-INF/web.xml. Las versiones afectadas son anteriores a 8.5.14, desde versi\u00f3n 8.6.0 anteriores a 8.13.6, y desde versi\u00f3n 8.14.0 anteriores a 8.16.1."
    }
  ],
  "id": "CVE-2021-26086",
  "lastModified": "2026-06-17T03:42:50.110",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-26086",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-11-13T14:08:00.786261Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2021-08-16T01:15:06.353",
  "references": [
    {
      "source": "security@atlassian.com",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.html"
    },
    {
      "source": "security@atlassian.com",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "url": "https://jira.atlassian.com/browse/JRASERVER-72695"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "url": "https://jira.atlassian.com/browse/JRASERVER-72695"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26086"
    }
  ],
  "sourceIdentifier": "security@atlassian.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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Nomenclature

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