RSVPMaker Excel <= 1.1 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 RSVPMaker Excel WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to a reflected $_SERVER["PHP_SELF"] value in the ~/phpexcel/PHPExcel/Shared/JAMA/docs/download.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.1.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00895 59th 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 |
|---|---|---|---|---|---|
| RSVPMaker Excel | RSVPMaker Excel | 1.1 – 1.1 | — | No fix listed | CNA |
- RSVPMaker Excel VendorRSVPMaker Excel Affected 1.1 – 1.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:carrcommunications:rsvpmaker_excel:*:*:*:*:*:wordpress:*:* | up to 1.1 | Vulnerable | davidfcarr |
- cpe:2.3:a:carrcommunications:rsvpmaker_excel:*:*:*:*:*:wordpress:*:* Versions up to 1.1 Vulnerable ·davidfcarr
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38337
- 2026-10-03 Alias added: GHSA-m4ch-hx25-qfhf
References
Sources
- CVE-2021-38337 · CVE Program
- CVE-2021-38337 · NVD
- FIRST EPSS
- GHSA-m4ch-hx25-qfhf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences