Cross-site scripting (XSS) in lightning-server
Priority LOW 30CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
This affects all versions of package lightning-server. It is possible to inject malicious JavaScript code as part of a session controller.
Why it matters now
EPSS 0.0086 58th 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
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | lightning-server | all versions | — | No fix listed | CNA |
| — | lightning-server (npm) | up to 1.3.0 | — | No fix listed | GHSA-gmch-cm2p-9qw9 |
- lightning-server Vendor— Affected all versions Fixed in — No fix listed CNA
- lightning-server (npm) Vendor— Affected up to 1.3.0 Fixed in — No fix listed GHSA-gmch-cm2p-9qw9
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:lightning-viz:lightning:*:*:*:*:*:node.js:*:* | all versions | Vulnerable | Lightning-viz |
- cpe:2.3:a:lightning-viz:lightning:*:*:*:*:*:node.js:*:* Versions all versions Vulnerable ·Lightning-viz
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-7747
- 2026-10-03 Alias added: GHSA-gmch-cm2p-9qw9
References
Sources
- CVE-2020-7747 · CVE Program
- CVE-2020-7747 · NVD
- FIRST EPSS
- GHSA-gmch-cm2p-9qw9 · 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