CVE-2026-77998

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

CRITICAL Extension Joomla — miniorange.com Source officielle

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.

Sévérité

10.0 Critique · CVSS 4.0

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

Score retenu : NVD

Source	Sévérité d'origine	CVSS
NVD	CRITICAL	10.0 (v4.0)

Produit et versions

Produit: Extension Joomla — miniorange.com
Corrigée dans: Non précisée
Publiée: 25/08/2026
Modifiée: 08/09/2026
CWE: CWE-639

Versions concernées

SAML SSO Free for Joomla extension for Joomla — 1.0.0 – 11.0.1
SAML SSO Basic for Joomla extension for Joomla — 1.0.0 – 13.1.0
SAML SSO Standard for Joomla extension for Joomla — 1.0.0 – 24.1.0
SAML SSO Premium for Joomla extension for Joomla — 1.0.0 – 34.1.0
SAML SSO Enterprise for Joomla extension for Joomla — 1.0.0 – 44.1.0
SAML SP Single Sign On – Login with ADFS extension for Joomla — 1.0.0 – 6.3.0
SAML SSO login with Google Apps extension for Joomla — 1.0.0 – 6.3.0

Sources

NVD CNA Joomla CVE-2026-77998 vu il y a 1 h

Ces informations proviennent des sources ci-dessus ; CVE Oyer n'y ajoute aucune interprétation.

Historique

Détectée via nvd26/09/2026 09:34 UTC

RéférencesJSON

www.miniorange.comNVD