Cross-site scripting (XSS) vulnerability in mail/signup.asp in CmailServer WebMail 5.4.3…
Priority LOW 22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Cross-site scripting (XSS) vulnerability in mail/signup.asp in CmailServer WebMail 5.4.3, and possibly earlier, allows remote attackers to inject arbitrary web script or HTML via the Comment parameter, a different vector than CVE-2007-1927.
Why it matters now
EPSS 0.01022 63rd 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:youngzsoft:cmailserver:*:*:*:*:*:*:*:* | up to 5.4.3 | Vulnerable | Youngzsoft |
- cpe:2.3:a:youngzsoft:cmailserver:*:*:*:*:*:*:*:* Versions up to 5.4.3 Vulnerable ·Youngzsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2007-1991
- 2026-10-03 Alias added: GHSA-q866-9m3h-92xr
References
—
More Youngzsoft Cmailserver vulnerabilities
- TI-2003-00261 Multiple buffer overflows in the SMTP Service for ESMTP CMailServer 4.0.2003.03.27 allow… CVSS 2.0HIGH 10.0
- TI-2008-06610 Multiple stack-based buffer overflows in CMailCOM.dll in CMailServer 5.4.6 allow remote… CVSS 2.0HIGH 9.3
- TI-2002-00776 Buffer overflow in YoungZSoft CMailServer 3.30 allows remote attackers to execute… CVSS 2.0HIGH 7.5
- TI-2004-01025 SQL injection vulnerability in (1) fdelmail.asp, (2) addressc.asp, and possibly (3)… CVSS 2.0HIGH 10.0
- TI-2004-01026 Cross-site scripting (XSS) vulnerability in admin.asp in CMailServer 5.2 allows remote… CVSS 2.0MEDIUM 6.8
- TI-2007-01849 Cross-site scripting (XSS) vulnerability in signup.asp in CmailServer WebMail 5.3.4 and… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2007-1991 · CVE Program
- CVE-2007-1991 · NVD
- FIRST EPSS
- GHSA-q866-9m3h-92xr · 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