SiteServer CMS RCE via unsafe file upload
A issue was discovered in SiteServer CMS prior to version 6.12. 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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | sscms | < 6.12 | 6.12 |
References
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-434- Platform
- .NET (NuGet)
- Package
sscms- Disclosed
- 24.05.2022
- Updated
- 11.10.2026 11:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-ff4w-8chr-w2x9 - CC BY 4.0
Vulnerability history: sscms
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 05.2022 05.2023
- Without a fix
- 4
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 3
Disclosures per year
- 2022: 4
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 0
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