simpleSAMLphp Authentication <= 0.7.0 Reflected Cross-Site Scripting
Priority LOW 29CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The simpleSAMLphp Authentication WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to a reflected $_SERVER["PHP_SELF"] value in the ~/simplesamlphp-authentication.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 0.7.0.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0097 62nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| simpleSAMLphp Authentication | simpleSAMLphp Authentication | 0.7.0 – 0.7.0 | — | No fix listed | CNA |
- simpleSAMLphp Authentication VendorsimpleSAMLphp Authentication Affected 0.7.0 – 0.7.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:simplesamlphp_authentication_project:simplesamlphp_authentication:*:*:*:*:*:wordpress:*:* | up to 0.7.0 | Vulnerable | Simplesamlphp Authentication Project |
- cpe:2.3:a:simplesamlphp_authentication_project:simplesamlphp_authentication:*:*:*:*:*:wordpress:*:* Versions up to 0.7.0 Vulnerable ·Simplesamlphp Authentication Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38320
- 2026-10-03 Alias added: GHSA-cfgm-gh5v-x98w
References
Sources
- CVE-2021-38320 · CVE Program
- CVE-2021-38320 · NVD
- FIRST EPSS
- GHSA-cfgm-gh5v-x98w · GitHub Advisory Database · CC BY 4.0
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