{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-77998",
        "assignerOrgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586",
        "state": "PUBLISHED",
        "assignerShortName": "Joomla",
        "dateReserved": "2026-08-21T19:23:55.924Z",
        "datePublished": "2026-08-25T12:50:46.506Z",
        "dateUpdated": "2026-09-08T10:38:41.779Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "product": "SAML SSO Free for Joomla extension for Joomla",
                    "vendor": "miniorange.com",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.0.0-11.0.1"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "SAML SSO Basic for Joomla extension for Joomla",
                    "vendor": "miniorange.com",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.0.0-13.1.0"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "SAML SSO Standard for Joomla extension for Joomla",
                    "vendor": "miniorange.com",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.0.0-24.1.0"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "SAML SSO Premium for Joomla extension for Joomla",
                    "vendor": "miniorange.com",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.0.0-34.1.0"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "SAML SSO Enterprise for Joomla extension for Joomla",
                    "vendor": "miniorange.com",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.0.0-44.1.0"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "SAML SP Single Sign On – Login with ADFS extension for Joomla",
                    "vendor": "miniorange.com",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.0.0-6.3.0"
                        }
                    ]
                },
                {
                    "defaultStatus": "unaffected",
                    "product": "SAML SSO login with Google Apps extension for Joomla",
                    "vendor": "miniorange.com",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "1.0.0-6.3.0"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Supakiad S. (m3ez)"
                },
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Phil Taylor, mysites.guru"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "base64": false,
                            "type": "text/html",
                            "value": "Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO < 11.0.2, SAML SP Single Sign On – Login with ADFS < 6.4,  SAML SP Single Sign On – SAML SSO login with Google Apps < 6.4 - This is due to the mo_saml_validate_signature() function performing a loose boolean check on the raw tri-state integer returned by PHP's openssl_verify(), causing an error return value of -1 to be evaluated as truthy and therefore treated as a successful signature verification. This makes it possible for unauthenticated attackers to log in as any existing Joomla user, including administrators, by submitting a crafted SAMLResponse containing an attacker-controlled NameID and a deliberately malformed signature value that triggers an OpenSSL processing error — bypassing verification entirely and resulting in wp_set_auth_cookie() being called for the targeted account."
                        }
                    ],
                    "value": "Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO < 11.0.2, SAML SP Single Sign On – Login with ADFS < 6.4,  SAML SP Single Sign On – SAML SSO login with Google Apps < 6.4 - This is due to the mo_saml_validate_signature() function performing a loose boolean check on the raw tri-state integer returned by PHP's openssl_verify(), causing an error return value of -1 to be evaluated as truthy and therefore treated as a successful signature verification. This makes it possible for unauthenticated attackers to log in as any existing Joomla user, including administrators, by submitting a crafted SAMLResponse containing an attacker-controlled NameID and a deliberately malformed signature value that triggers an OpenSSL processing error — bypassing verification entirely and resulting in wp_set_auth_cookie() being called for the targeted account."
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "attackVector": "NETWORK",
                        "baseScore": 10,
                        "baseSeverity": "CRITICAL",
                        "exploitMaturity": "NOT_DEFINED",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "HIGH",
                        "subIntegrityImpact": "HIGH",
                        "userInteraction": "NONE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
                        "version": "4.0",
                        "vulnAvailabilityImpact": "HIGH",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-639",
                            "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586",
                "shortName": "Joomla",
                "dateUpdated": "2026-09-08T10:38:41.779Z"
            },
            "references": [
                {
                    "tags": [
                        "product"
                    ],
                    "url": "https://www.miniorange.com/"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "Joomla Extension - miniorange.com - Unauthenticated Authentication Bypass via SAMLResponse Parameter in miniOrange SAML SSO < 11.0.2, SAML SP Single Sign On – Login with ADFS < 6.4,  SAML SP Single Sign On – SAML SSO login with Google Apps < 6.4",
            "x_generator": {
                "engine": "Vulnogram 0.1.0-dev"
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        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2026-77998",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2026-08-25T14:38:55.305998Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-25T14:51:54.057Z"
                }
            }
        ]
    }
}