Medium 6.4Published May 10, 2026

CVE-2021-47931Exponent CMS 2.6 Multiple Vulnerabilities Stored XSS Authentication

Updated under an hour ago (Oct 28, 2026, 4:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Exponentcms Exponent CMS

Exploited in the last 30 days

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.

CVSS: 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: May 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Exponentcms Exponent CMS exponentcms:exponent_cms (from the name)	through 2.6	CNA record

References

References

https://www.exploit-db.com/exploits/50611	exploit
https://www.exponentcms.org/	product
https://www.vulncheck.com/advisories/exponent-cms-multiple-vulnerabilities-stored-xss-authentication	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.