A stored cross site scripting (XSS) vulnerability in /admin/snippets.php of GetSimple CMS…
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
A stored cross site scripting (XSS) vulnerability in /admin/snippets.php of GetSimple CMS 3.4.0a allows attackers to execute arbitrary web scripts or HTML via crafted payload in the Edit Snippets module.
Why it matters now
EPSS 0.00549 46th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:get-simple:getsimplecms:3.4.0a:*:*:*:*:*:*:* | 3.4.0a | Vulnerable | GetSimple CMS |
- cpe:2.3:a:get-simple:getsimplecms:3.4.0a:*:*:*:*:*:*:* Versions 3.4.0a Vulnerable ·GetSimple CMS
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-21353
- 2026-10-03 Alias added: GHSA-7rx9-2m95-hgp8
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-2021-22474 GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE CVSS 4.0HIGH 8.5
- 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
Sources
- CVE-2020-21353 · CVE Program
- CVE-2020-21353 · NVD
- FIRST EPSS
- GHSA-7rx9-2m95-hgp8 · 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