{"data":{"id":"CVE-2026-77998","cve_id":"CVE-2026-77998","title":"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","summary":"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","severity":"CRITICAL","cvss":{"score":10.0,"version":"4.0","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","source":"nvd"},"published_at":"2026-08-25T13:19:30.817000Z","modified_at":"2026-09-08T11:17:44.560000Z","withdrawn_at":null,"is_joomla":true,"is_joomla_core":false,"relevance":"certain","product":"Extension Joomla — miniorange.com","extension":{"type":null,"name":null},"sources":["nvd"],"source_count":1,"url":"https://cve.oyer.fr/cve/CVE-2026-77998","description":"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.","cwe":["CWE-639"],"affected":[{"package":null,"product":"SAML SSO Free for Joomla extension for Joomla","vendor":"miniorange.com","ecosystem":null,"cpe":null,"version_start":"1.0.0","version_end":"11.0.1","version_end_inclusive":true,"fixed_version":null,"type":null,"source":"nvd"},{"package":null,"product":"SAML SSO Basic for Joomla extension for Joomla","vendor":"miniorange.com","ecosystem":null,"cpe":null,"version_start":"1.0.0","version_end":"13.1.0","version_end_inclusive":true,"fixed_version":null,"type":null,"source":"nvd"},{"package":null,"product":"SAML SSO Standard for Joomla extension for Joomla","vendor":"miniorange.com","ecosystem":null,"cpe":null,"version_start":"1.0.0","version_end":"24.1.0","version_end_inclusive":true,"fixed_version":null,"type":null,"source":"nvd"},{"package":null,"product":"SAML SSO Premium for Joomla extension for Joomla","vendor":"miniorange.com","ecosystem":null,"cpe":null,"version_start":"1.0.0","version_end":"34.1.0","version_end_inclusive":true,"fixed_version":null,"type":null,"source":"nvd"},{"package":null,"product":"SAML SSO Enterprise for Joomla extension for Joomla","vendor":"miniorange.com","ecosystem":null,"cpe":null,"version_start":"1.0.0","version_end":"44.1.0","version_end_inclusive":true,"fixed_version":null,"type":null,"source":"nvd"},{"package":null,"product":"SAML SP Single Sign On – Login with ADFS extension for Joomla","vendor":"miniorange.com","ecosystem":null,"cpe":null,"version_start":"1.0.0","version_end":"6.3.0","version_end_inclusive":true,"fixed_version":null,"type":null,"source":"nvd"},{"package":null,"product":"SAML SSO login with Google Apps extension for Joomla","vendor":"miniorange.com","ecosystem":null,"cpe":null,"version_start":"1.0.0","version_end":"6.3.0","version_end_inclusive":true,"fixed_version":null,"type":null,"source":"nvd"}],"references":[{"url":"https://www.miniorange.com/","title":null,"source":"nvd"}],"source_records":[{"source":"nvd","external_id":"CVE-2026-77998","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77998","severity":"CRITICAL","cvss_score":10.0,"cvss_vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_version":"4.0","first_seen_at":"2026-09-26T09:34:33.921253Z","last_seen_at":"2026-09-26T09:34:33.921253Z"}],"history":[{"at":"2026-09-26T09:34:33.921253Z","event":"created","source":"nvd","detail":"Détectée via nvd"}]}}