GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE
Priority HIGH 76CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. Attackers can craft a malicious website that triggers a cross-site scripting payload to execute remote code on the hosting server when an authenticated administrator visits the page.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00276 20th percentileScored 2026-11-07
Public exploit Yes 3 exploit referencesTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| GetSimple CMS | Custom JS Plugin | 0.1 | — | No fix listed | CNA |
- Custom JS Plugin VendorGetSimple CMS Affected 0.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:get-simple:getsimplecms:0.1:*:*:*:*:*:*:* | 0.1 | Vulnerable | GetSimple CMS |
- cpe:2.3:a:get-simple:getsimplecms:0.1:*:*:*:*:*:*:* Versions 0.1 Vulnerable ·GetSimple CMS
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-47860
- 2026-10-03 Alias added: GHSA-vhhc-pp7m-qvpp
References
More GetSimple CMS Getsimplecms vulnerabilities
- TI-2023-24706 An issue in GetSimpleCMS v.3.4.0a allows a remote attacker to execute arbitrary code via… CVSS 3.1CRITICAL 9.8
- TI-2013-06175 GetSimple CMS 3.2.1 Authenticated RCE via Arbitrary PHP File Upload CVSS 4.0HIGH 8.7
- TI-2021-22394 GetSimple CMS My SMTP Contact Plugin 1.1.2 - PHP Code Injection CVSS 4.0HIGH 8.6
- TI-2024-10309 GetSimpleCMS profile.php cross-site request forgery CVSS 4.0MEDIUM 6.9
- TI-2023-24705 Cross Site Scripting vulnerability in GetSimpleCMS v.3.4.0a allows a remote attacker to… CVSS 3.1MEDIUM 5.4
- TI-2021-22446 GetSimple CMS My SMTP Contact Plugin 1.1.1 - CSRF CVSS 4.0MEDIUM 5.1
Sources
- CVE-2021-47860 · CVE Program
- CVE-2021-47860 · NVD
- FIRST EPSS
- GHSA-vhhc-pp7m-qvpp · 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