OneLogin SAML-SSO Plugin < 2.1.6 — Authentication Bypass
c5a5c209-0ccd-4fa9-b22d-05bb22247441Published · Updated Action summary
Affected: <2.1.6Update to 2.1.6 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-287 Improper Authentication
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
OneLogin SAML SSO onelogin-saml-sso
- Affected< 2.1.6
- Patched in2.1.6
Update to 2.1.6 or newer.
You are affected if you run < 2.1.6. Version 2.1.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under OneLogin SAML SSO.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.1.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch OneLogin SAML SSO to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Jouko Pynnöne.
The OneLogin SAML-SSO plugin for WordPress is vulnerable to authentication bypass due to insufficient user validation in the ~/onelogin-saml-sso/onelogin_saml.php file in versions up to, and including, 2.1.5. This makes it possible for unauthenticated attackers to create new accounts, including administrator accounts if an existing administrator's role name, username, or email address is correctly guessed.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in OneLogin SAML SSO
All 5| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.7 | Open Redirection ≤3.1.2Update to 3.2.0 | — | |
| High7.5 | Distributed Denial-of-Service ≤2.8.0Update to 3.0.0 | — | |
| High7.3 | Use of Vulnerable Component ≤2.4.2Update to 2.4.3 | — | |
| High7.5 | Authentication Bypass <2.2.0Update to 2.2.0 | CVE-2016-10928 |
- Medium4.7Open Redirection
≤3.1.2Update to 3.2.0
- High7.5Distributed Denial-of-Service
≤2.8.0Update to 3.0.0
- High7.3Use of Vulnerable Component
≤2.4.2Update to 2.4.3
- High7.5Authentication Bypass
<2.2.0Update to 2.2.0
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.