WordPress OpenID Connect Client <= 2.1.7 — Authentication Bypass
a10ba041-ded4-41d4-93ba-7fa7389acd54Published · Updated Action summary
Affected: ≤2.1.7Update to 2.1.8 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
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
WordPress OpenID Connect Client miniorange-openid-connect-client
- Affected≤ 2.1.7
- Patched in2.1.8
Update to 2.1.8 or newer.
You are affected if you run ≤ 2.1.7. Version 2.1.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WordPress OpenID Connect Client.
- 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 2.1.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WordPress OpenID Connect Client to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence.
The WordPress OpenID Connect Client plugin for WordPress is vulnerable to authentication bypass in versions up to, and including 2.1.7. This is due to the plugin accepting a user supplied email address that is passed to wp_set_auth_cookie() with no further identity validation to verify that the email supplied belongs to the user trying to log in with that email address. This makes it possible for unauthenticated attackers to log in as a site administrator granted they have access to a site admin's email address.
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 WordPress OpenID Connect Client
All 2| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.1 | Reflected Cross-Site Scripting ≤6.20.2Update to 6.20.3 | — |
- Medium6.1Reflected Cross-Site Scripting
≤6.20.2Update to 6.20.3
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.