SAML Single Sign On – SAML SSO Login <= 4.9.20 — Reflected Cross-Site Scripting
961cf553-8871-436d-af95-61af963f5e9dPublished · Updated Action summary
Affected: ≤4.9.20Update to 4.9.21 or newer
All remediation steps- Severity
- Medium6.1
- CVSS
- 6.1CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:RUser interaction- Required
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- 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?
SAML Single Sign On – SSO Login miniorange-saml-20-single-sign-on
- Affected≤ 4.9.20
- Patched in4.9.21
Update to 4.9.21 or newer.
You are affected if you run ≤ 4.9.20. Version 4.9.21 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under SAML Single Sign On – SSO Login.
- 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 4.9.21, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch SAML Single Sign On – SSO Login to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence.
The SAML Single Sign On – SAML SSO Login plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in versions up to, and including, 4.9.20. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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 SAML Single Sign On – SSO Login
All 13| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.5 | Unauthenticated Denial of Service ≤6.1.0Update to 6.2.0 | CVE-2026-62126 | |
| High7.3 | Unauthenticated Privilege Escalation ≤5.4.7Update to 6.0.0 | CVE-2026-82842 | |
| High7.5 | Unauthenticated Authentication Bypass via X.509 Certificate Poisoning ≤5.4.6Update to 5.4.7 | CVE-2026-75807 | |
| High7.3 | Unauthenticated Privilege Escalation 4.8.85 – 5.4.6Update to 5.4.7 | CVE-2026-19842 | |
| Critical9.8 | Unauthenticated Privilege Escalation ≤5.4.3Update to 5.4.4 | CVE-2026-61979 |
- High7.5Unauthenticated Denial of Service
≤6.1.0Update to 6.2.0
- High7.3Unauthenticated Privilege Escalation
≤5.4.7Update to 6.0.0
- High7.5Unauthenticated Authentication Bypass via X.509 Certificate Poisoning
≤5.4.6Update to 5.4.7
- High7.3Unauthenticated Privilege Escalation
4.8.85 – 5.4.6Update to 5.4.7
- Critical9.8Unauthenticated Privilege Escalation
≤5.4.3Update to 5.4.4
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- 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
- 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
- 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
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 6.1
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.