Authorization bypass in miniorange.com SAML SSO Free for Joomla extension for Joomla
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| miniorange.com | SAML SSO Free for Joomla extension for Joomla | 1.0.0-11.0.1 | — | No fix listed | CNA |
| miniorange.com | SAML SSO Basic for Joomla extension for Joomla | 1.0.0-13.1.0 | — | No fix listed | CNA |
| miniorange.com | SAML SSO Standard for Joomla extension for Joomla | 1.0.0-24.1.0 | — | No fix listed | CNA |
| miniorange.com | SAML SSO Premium for Joomla extension for Joomla | 1.0.0-34.1.0 | — | No fix listed | CNA |
| miniorange.com | SAML SSO Enterprise for Joomla extension for Joomla | 1.0.0-44.1.0 | — | No fix listed | CNA |
| miniorange.com | SAML SP Single Sign On – Login with ADFS extension for Joomla | 1.0.0-6.3.0 | — | No fix listed | CNA |
| miniorange.com | SAML SSO login with Google Apps extension for Joomla | 1.0.0-6.3.0 | — | No fix listed | CNA |
- SAML SSO Free for Joomla extension for Joomla Vendorminiorange.com Affected 1.0.0-11.0.1 Fixed in — No fix listed CNA
- SAML SSO Basic for Joomla extension for Joomla Vendorminiorange.com Affected 1.0.0-13.1.0 Fixed in — No fix listed CNA
- SAML SSO Standard for Joomla extension for Joomla Vendorminiorange.com Affected 1.0.0-24.1.0 Fixed in — No fix listed CNA
- SAML SSO Premium for Joomla extension for Joomla Vendorminiorange.com Affected 1.0.0-34.1.0 Fixed in — No fix listed CNA
- SAML SSO Enterprise for Joomla extension for Joomla Vendorminiorange.com Affected 1.0.0-44.1.0 Fixed in — No fix listed CNA
- SAML SP Single Sign On – Login with ADFS extension for Joomla Vendorminiorange.com Affected 1.0.0-6.3.0 Fixed in — No fix listed CNA
- SAML SSO login with Google Apps extension for Joomla Vendorminiorange.com Affected 1.0.0-6.3.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-77998
- 2026-10-03 Alias added: GHSA-mp5v-46h8-gw29
References
Other 1
More miniorange.com vulnerabilities
- TI-2026-54270 Authorization bypass in miniorange.com miniOrange OAuth Client extension for Joomla CVSS 4.0CRITICAL 10.0
Sources
- CVE-2026-77998 · CVE Program
- CVE-2026-77998 · NVD
- FIRST EPSS
- GHSA-mp5v-46h8-gw29 · GitHub Advisory Database · CC BY 4.0
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