Clansphere CMS 2011.4 allows unauthenticated reflected XSS via "module" parameter.
Priority LOW 31CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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
Clansphere CMS 2011.4 allows unauthenticated reflected XSS via "module" parameter.
Why it matters now
EPSS 0.01969 80th 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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-27309
- 2026-10-03 Alias added: GHSA-9mpw-pcw7-gq3g
References
More Csphere Clansphere vulnerabilities
- TI-2012-05457 ClanSphere 2011.3 Local File Inclusion via cs_lang Cookie CVSS 4.0HIGH 8.7
- TI-2022-21041 A cross-site scripting (XSS) vulnerability in Clansphere CMS v2011.4 allows attackers to… CVSS 3.1MEDIUM 6.1
- TI-2010-01784 Multiple SQL injection vulnerabilities in ClanSphere 2009.0.3 and earlier allow remote… CVSS 2.0HIGH 7.5
- TI-2021-08831 Clansphere CMS 2011.4 allows unauthenticated reflected XSS via "language" parameter. CVSS 3.1MEDIUM 6.1
- TI-2011-03271 ClanSphere 2010.0 allows remote attackers to obtain sensitive information via a direct… CVSS 2.0MEDIUM 5.0
- TI-2014-08274 Cross-site scripting (XSS) vulnerability in ClanSphere 2011.4 allows remote attackers to… CVSS 2.0MEDIUM 4.3
Sources
- CVE-2021-27309 · CVE Program
- CVE-2021-27309 · NVD
- FIRST EPSS
- GHSA-9mpw-pcw7-gq3g · GitHub Advisory Database · CC BY 4.0
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