fkie_cve-2025-27800
Vulnerability from fkie_nvd
Published
2025-07-28 09:15
Modified
2025-07-29 14:14
Severity ?
Summary
The Episerver Content Management System (CMS) by Optimizely was affected by multiple Stored Cross-Site Scripting (XSS) vulnerabilities. This allowed an authenticated attacker to execute malicious JavaScript code in the victim's browser.
The Admin dashboard offered the functionality to add gadgets to the dashboard.
This included the "Notes" gadget. An authenticated attacker with the corresponding
access rights (such as "WebAdmin") that was impersonating the victim could insert
malicious JavaScript code in these notes that would be executed if the victim
visited the dashboard.
Affected products: Version 11.X: EPiServer.CMS.Core (<11.21.4) with EPiServer.CMS.UI (<11.37.5), Version 12.X: EPiServer.CMS.Core (<12.22.1) with EPiServer.CMS.UI (<11.37.3)
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Episerver Content Management System (CMS) by Optimizely was affected by multiple Stored Cross-Site Scripting (XSS) vulnerabilities. This allowed an authenticated attacker to execute malicious JavaScript code in the victim\u0027s browser.\n\n\n\nThe Admin dashboard offered the functionality to add gadgets to the dashboard.\nThis included the \"Notes\" gadget. An authenticated attacker with the corresponding\naccess rights (such as \"WebAdmin\") that was impersonating the victim could insert\nmalicious JavaScript code in these notes that would be executed if the victim\nvisited the dashboard.\n\nAffected products: Version 11.X: EPiServer.CMS.Core (\u003c11.21.4) with EPiServer.CMS.UI (\u003c11.37.5), Version 12.X: EPiServer.CMS.Core (\u003c12.22.1) with EPiServer.CMS.UI (\u003c11.37.3)"
},
{
"lang": "es",
"value": "Episerver Content Management System (CMS) by Optimizely se vio afectado por m\u00faltiples vulnerabilidades de Cross-Site Scripting (XSS) almacenado. Esto permiti\u00f3 que un atacante autenticado ejecutara c\u00f3digo JavaScript malicioso en el navegador de la v\u00edctima. El panel de administraci\u00f3n permit\u00eda a\u00f1adir gadgets, incluido el gadget \"Notes\". Un atacante autenticado con los permisos de acceso correspondientes (como \"WebAdmin\") que se hiciera pasar por la v\u00edctima pod\u00eda insertar c\u00f3digo JavaScript malicioso en estas notas, que se ejecutar\u00eda si la v\u00edctima visitaba el panel. Productos afectados: Versi\u00f3n 11.X: EPiServer.CMS.Core (\u0026lt;11.21.4) con EPiServer.CMS.UI (\u0026lt;11.37.5), Versi\u00f3n 12.X: EPiServer.CMS.Core (\u0026lt;12.22.1) con EPiServer.CMS.UI (\u0026lt;11.37.3)."
}
],
"id": "CVE-2025-27800",
"lastModified": "2025-07-29T14:14:29.590",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.7,
"impactScore": 2.7,
"source": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"type": "Secondary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "HIGH",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"type": "Secondary"
}
]
},
"published": "2025-07-28T09:15:34.387",
"references": [
{
"source": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"url": "https://api.nuget.optimizely.com/packages/episerver.cms.core/11.21.4#"
},
{
"source": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"url": "https://api.nuget.optimizely.com/packages/episerver.cms.core/12.22.1#"
},
{
"source": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"url": "https://r.sec-consult.com/optimizely"
}
],
"sourceIdentifier": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "551230f0-3615-47bd-b7cc-93e92e730bbf",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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