CMS Made Simple (CMSMS) 2.1.6 allows remote authenticated administrators to execute…
Priority HIGH 67CWE-94Published · 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
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-94.
Summary
CMS Made Simple (CMSMS) 2.1.6 allows remote authenticated administrators to execute arbitrary PHP code via the code parameter to admin/editusertag.php, related to the CreateTagFunction and CallUserTag functions. NOTE: the vendor reportedly has stated this is "a feature, not a bug.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.03111 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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:cmsmadesimple:cms_made_simple:2.1.6:*:*:*:*:*:*:* | 2.1.6 | Vulnerable | Cmsmadesimple |
- cpe:2.3:a:cmsmadesimple:cms_made_simple:2.1.6:*:*:*:*:*:*:* Versions 2.1.6 Vulnerable ·Cmsmadesimple
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-8912
- 2026-10-03 Alias added: GHSA-277p-ffm3-r4h5
References
More Cmsmadesimple Cms Made Simple vulnerabilities
- TI-2023-18726 CMS Made Simple v2.2.17 is vulnerable to Remote Command Execution via the File Upload Function. CVSS 3.1HIGH 8.8
- TI-2019-06534 An issue was discovered in CMS Made Simple 2.2.8. CVSS 3.0HIGH 8.1
- TI-2023-23207 An issue in CMSmadesimple v.2.2.18 allows a local attacker to execute arbitrary code via… CVSS 3.1HIGH 7.8
- TI-2024-18325 A remote code execution vulnerability has been identified in the User Defined Tags module… CVSS 3.1HIGH 7.2
- TI-2021-09905 File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated… CVSS 3.1HIGH 7.2
- TI-2024-18326 CMS Made Simple version 2.2.19 is vulnerable to Server-Side Template Injection (SSTI). CVSS 3.1MEDIUM 5.9
Sources
- CVE-2017-8912 · CVE Program
- CVE-2017-8912 · NVD
- FIRST EPSS
- GHSA-277p-ffm3-r4h5 · 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