Persistent cross-site scripting (XSS) in the web interface of Concerto through 2.3.6…
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 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Persistent cross-site scripting (XSS) in the web interface of Concerto through 2.3.6 allows an unauthenticated remote attacker to introduce arbitrary JavaScript by injecting an XSS payload into the First Name or Last Name parameter upon registration. When a privileged user attempts to delete the account, the XSS payload will be executed.
Why it matters now
EPSS 0.00921 60th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:concerto-signage:concerto:*:*:*:*:*:*:*:* | up to 2.3.6 | Vulnerable | Concerto-signage |
- cpe:2.3:a:concerto-signage:concerto:*:*:*:*:*:*:*:* Versions up to 2.3.6 Vulnerable ·Concerto-signage
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-31930
- 2026-10-03 Alias added: GHSA-6x7c-5jc6-7qc6
References
Sources
- CVE-2021-31930 · CVE Program
- CVE-2021-31930 · NVD
- FIRST EPSS
- GHSA-6x7c-5jc6-7qc6 · GitHub Advisory Database · CC BY 4.0
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