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, and the application also exposes database credentials in responses and lacks brute-force protection on authentication endpoints.
Published: 2026-05-10
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 11 May 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 10 May 2026 13:00:00 +0000

Type Values Removed Values Added
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, and the application also exposes database credentials in responses and lacks brute-force protection on authentication endpoints.
Title Exponent CMS 2.6 Multiple Vulnerabilities Stored XSS Authentication
First Time appeared Exponentcms
Exponentcms exponent Cms
Weaknesses CWE-79
CPEs cpe:2.3:a:exponentcms:exponent_cms:*:*:*:*:*:*:*:*
Vendors & Products Exponentcms
Exponentcms exponent Cms
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': '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'}


Subscriptions

Exponentcms Exponent Cms
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-11T11:37:20.832Z

Reserved: 2026-02-01T11:24:18.717Z

Link: CVE-2021-47931

cve-icon Vulnrichment

Updated: 2026-05-11T11:37:16.156Z

cve-icon NVD

Status : Deferred

Published: 2026-05-10T13:16:29.293

Modified: 2026-05-13T15:30:24.603

Link: CVE-2021-47931

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-10T15:15:14Z

Weaknesses