CVE-2026-21569

{
    "cve": {
        "id": "CVE-2026-21569",
        "cveTags": [],
        "metrics": {
            "cvssMetricV30": [
                {
                    "type": "Secondary",
                    "source": "security@atlassian.com",
                    "cvssData": {
                        "scope": "CHANGED",
                        "version": "3.0",
                        "baseScore": 7.9,
                        "attackVector": "NETWORK",
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:H",
                        "integrityImpact": "LOW",
                        "userInteraction": "NONE",
                        "attackComplexity": "HIGH",
                        "availabilityImpact": "HIGH",
                        "privilegesRequired": "HIGH",
                        "confidentialityImpact": "HIGH"
                    },
                    "impactScore": 6,
                    "exploitabilityScore": 1.3
                }
            ]
        },
        "published": "2026-01-28T01:16:14.187",
        "references": [
            {
                "url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1712324819",
                "tags": [
                    "Vendor Advisory"
                ],
                "source": "security@atlassian.com"
            },
            {
                "url": "https://jira.atlassian.com/browse/CWD-6453",
                "tags": [
                    "Vendor Advisory",
                    "Issue Tracking"
                ],
                "source": "security@atlassian.com"
            }
        ],
        "vulnStatus": "Analyzed",
        "weaknesses": [
            {
                "type": "Secondary",
                "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                "description": [
                    {
                        "lang": "en",
                        "value": "CWE-611"
                    }
                ]
            }
        ],
        "descriptions": [
            {
                "lang": "en",
                "value": "This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server. \n\t\n\tThis XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction. \n\t\n\tAtlassian recommends that Crowd Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:\n\t\t\n\t\t* Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3\n\t\t\n\t\t\n\t\n\tSee the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive). \n\t\n\tThis vulnerability was reported via our Atlassian (Internal) program."
            }
        ],
        "lastModified": "2026-02-02T13:22:24.383",
        "configurations": [
            {
                "nodes": [
                    {
                        "negate": false,
                        "cpeMatch": [
                            {
                                "criteria": "cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*",
                                "vulnerable": true,
                                "matchCriteriaId": "1D58C58C-051C-4A3E-BEC8-296F8086DDF5",
                                "versionEndExcluding": "7.1.3",
                                "versionStartIncluding": "7.1.0"
                            }
                        ],
                        "operator": "OR"
                    }
                ]
            }
        ],
        "sourceIdentifier": "security@atlassian.com"
    }
}