{
    "CVE_data_meta": {
        "ASSIGNER": "security@atlassian.com",
        "DATE_PUBLIC": "2021-04-13T00:00:00",
        "ID": "CVE-2021-26073",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Atlassian Connect Express (ACE)",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "3.0.2",
                                            "version_affected": ">="
                                        },
                                        {
                                            "version_value": "6.6.0",
                                            "version_affected": "<"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Atlassian"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions between 3.0.2 - 6.5.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Broken Authentication"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099",
                "refsource": "MISC",
                "name": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099"
            },
            {
                "url": "https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a[\u2026]ypass-of-app-qsh-verification-via-context-jwts/47072",
                "refsource": "MISC",
                "name": "https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a[\u2026]ypass-of-app-qsh-verification-via-context-jwts/47072"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20210604-0004/",
                "url": "https://security.netapp.com/advisory/ntap-20210604-0004/"
            }
        ]
    }
}