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OAuth client Single Sign On for WordPress ( OAuth 2.0 SSO ) <= 3.0.1 — Cross-Site Scripting

517653e5-fdad-4360-82a5-32b16a6cd631Published · Updated

Action summary

Affected: ≤3.0.1Update to 3.0.2 or newer

All remediation steps
Watch plugin
Severity
High7.2
CVSS
7.2
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-79 Cross-Site Scripting
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

OAuth client Single Sign On for WordPress ( OAuth 2.0 SSO ) oauth-client-for-user-authentication

  1. Affected≤ 3.0.1
  2. Patched in3.0.2

Update to 3.0.2 or newer.

You are affected if you run ≤ 3.0.1. Version 3.0.2 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under OAuth client Single Sign On for WordPress ( OAuth 2.0 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

  1. Update to version 3.0.2, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch OAuth client Single Sign On for WordPress ( OAuth 2.0 SSO ) to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence.

The OAuth client Single Sign On for WordPress ( OAuth 2.0 SSO ) plugin for WordPress is vulnerable to Cross-Site Scripting via the $key variable in versions up to, and including 3.0.1.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in OAuth client Single Sign On for WordPress ( OAuth 2.0 SSO )

All 2
More vulnerabilities in OAuth client Single Sign On for WordPress ( OAuth 2.0 SSO )
SeverityVulnerabilityCVEPublished
High7.3Missing Authorization
≤3.0.3Update to 3.0.4
CVE-2022-3119

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
Other Cross-Site Scripting vulnerabilities
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High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity high, CVSS 7.2

  2. Record last updated

Sources & licenses

Vulnerability data
Wordfence Intelligence. [object Object] 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.

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