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CVE-2021-43942

Estado: ModificadaMedia (6.1)—

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a Reflected Cross-Site Scripting (XSS) vulnerability in the /rest/collectors/1.0/template/custom endpoint. To exploit this issue, the attacker must trick a user into visiting a malicious website. The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3.

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 ServerAtlassian — Jira Server AND Data Center

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-43942",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-43942",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-08T14:22:39.399202Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "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": "CHANGED",
          "version": "3.1",
          "baseScore": 6.1,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@atlassian.com",
      "affectedData": [
        {
          "vendor": "Atlassian",
          "product": "Jira Server",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "8.13.15",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "8.14.0",
              "lessThan": "unspecified",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "8.20.3",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Atlassian",
          "product": "Jira Data Center",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "8.13.15",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "8.14.0",
              "lessThan": "unspecified",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "8.20.3",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-01-04T03:15:07.233",
  "references": [
    {
      "url": "https://jira.atlassian.com/browse/JRASERVER-73068",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "security@atlassian.com"
    },
    {
      "url": "https://jira.atlassian.com/browse/JRASERVER-73068",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a Reflected Cross-Site Scripting (XSS) vulnerability in the /rest/collectors/1.0/template/custom endpoint. To exploit this issue, the attacker must trick a user into visiting a malicious website. The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3."
    },
    {
      "lang": "es",
      "value": "Las versiones afectadas de Atlassian Jira Server y Data Center permiten a atacantes remotos inyectar HTML o JavaScript arbitrarios por medio de una vulnerabilidad de tipo Cross-Site Scripting (XSS) Reflejado en el endpoint /rest/collectors/1.0/template/custom. Para explotar este problema, el atacante debe engañar a un usuario para que visite un sitio web malicioso. Las versiones afectadas son anteriores a 8.13.15, y desde la versión 8.14.0 hasta 8.20.3"
    }
  ],
  "lastModified": "2026-06-17T04:11:40.250",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9025C857-EC16-431D-B3F9-4F10BE17C8A4",
              "versionEndExcluding": "8.20.3",
              "versionStartIncluding": "8.14.0"
            },
            {
              "criteria": "cpe:2.3:a:atlassian:jira_server_and_data_center:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A28197F9-EC40-4273-9989-5F9B043FC5BA",
              "versionEndExcluding": "8.13.5"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@atlassian.com"
}