A issue was discovered in SiteServer CMS 6.9.0.
Priority LOW 37CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-434.
Summary
A issue was discovered in SiteServer CMS 6.9.0. It allows remote attackers to execute arbitrary code because an administrator can add the permitted file extension .aassp, which is converted to .asp because the "as" substring is deleted.
Why it matters now
EPSS 0.0282 86th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed sscms (NuGet): 6.12
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 |
| — | sscms (NuGet) | before 6.12 | 6.12 | Patch available | GHSA-ff4w-8chr-w2x9 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- sscms (NuGet) Vendor— Affected before 6.12 Fixed in 6.12 Patch available GHSA-ff4w-8chr-w2x9
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:siteserver:siteserver_cms:6.9.0:*:*:*:*:*:*:* | 6.9.0 | Vulnerable | SiteServer |
- cpe:2.3:a:siteserver:siteserver_cms:6.9.0:*:*:*:*:*:*:* Versions 6.9.0 Vulnerable ·SiteServer
Remediation
- Fix · GHSA-ff4w-8chr-w2x9 sscms (NuGet) Fixed in 6.12 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2019-11401
- 2026-10-03 Alias added: GHSA-ff4w-8chr-w2x9
References
Sources
- CVE-2019-11401 · CVE Program
- CVE-2019-11401 · NVD
- FIRST EPSS
- GHSA-ff4w-8chr-w2x9 · GitHub Advisory Database · CC BY 4.0
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