CommuniGate Pro 6.2 allows stored XSS via a message body in Pronto! Mail Composer, which…
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 3.0 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
CommuniGate Pro 6.2 allows stored XSS via a message body in Pronto! Mail Composer, which is mishandled in /MIME/INBOX-MM-1/ if the raw email link (in .txt format) is modified and then renamed with a .html or .wssp extension.
Why it matters now
EPSS 0.01058 64th 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 |
|---|---|---|---|---|---|
| — | — | 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:communigate:communigate_pro:6.2:*:*:*:*:*:*:* | 6.2 | Vulnerable | Communigate |
- cpe:2.3:a:communigate:communigate_pro:6.2:*:*:*:*:*:*:* Versions 6.2 Vulnerable ·Communigate
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-18621
- 2026-10-03 Alias added: GHSA-m987-jp5m-qvxh
References
More Communigate Pro vulnerabilities
- TI-2017-12494 The WebMail components (Crystal, pronto, and pronto4) in CommuniGate Pro before 6.2.1… CVSS 3.0MEDIUM 6.1
Sources
- CVE-2018-18621 · CVE Program
- CVE-2018-18621 · NVD
- FIRST EPSS
- GHSA-m987-jp5m-qvxh · 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