CVE-2021-47931
Exponent CMS 2.6 Multiple Vulnerabilities Stored XSS Authentication
- State
- Published
- Severity
- 5.1 Medium
- Published
- May 10, 2026
- Updated
- May 26, 2026
- Reserved
- Feb 1, 2026
Description
Exponent CMS 2.6 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts through the Title and Text Block parameters in the text editing endpoint. Attackers can inject iframe payloads with embedded SVG onload events to execute arbitrary JavaScript. The application also exposes database credentials in responses and lacks brute-force protection on authentication endpoints.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Exponent CMSExponentcms |
|
References
- ExploitDB-50611exploit
- Official Product Homepageproduct
- VulnCheck Advisory: Exponent CMS 2.6 Multiple Vulnerabilities Stored XSS Authenticationthird-party-advisory
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