CVE-2019-11401 json
SiteServer CMS RCE via unsafe file upload
published 2019-04-21 7 y ago modified 2026-06-17 4 mo ago also GHSA-ff4w-8chr-w2x9 , EUVD-2022-3756
- cvss
- 7.2
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.8%
- EPSS 2.8% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
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.
Patch / fix
Exploit prediction
2.82% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/siteserver/cms/issues/1858 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.2 | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
| GitHub | 3.0 | 7.2 | CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | sscms | <6.12 |
6.12 |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
github.com
/siteserver/cms/commit/a7edb9ce3f9b52be3d18fa8a0e44931264e22436#diff-c8a06aaffb97eb2f4c587c1786906edd49dea574d
web
-
github.com
/siteserver/cms/issues/1858
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-11401
advisory
-
github.com
/siteserver/cms
package
Sources
- CVE List CVE-2019-11401
- GitHub Advisory GHSA-ff4w-8chr-w2x9
- NVD CVE-2019-11401
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.