github - ghsa-hwcj-2grf-hc24

ghsa-hwcj-2grf-hc24

Vulnerability from github

Published

2025-07-28 09:31

Modified

2025-07-29 12:31

Severity ?

4.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.6 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Details

RTE properties (text fields), which could be used in the "Edit" section of the CMS, allowed the input of arbitrary text. It was possible to input malicious JavaScript code in these properties that would be executed if a user visits the previewed page. Attackers needed at least the role "WebEditor" in order to exploit this issue.

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)

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{
  "affected": [],
  "aliases": [
    "CVE-2025-27802"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-28T09:15:34Z",
    "severity": "MODERATE"
  },
  "details": "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\nRTE properties (text fields), which could be used in the \"Edit\" section of the CMS,\nallowed the input of arbitrary text. It was possible to input malicious JavaScript \ncode in these properties that would be executed if a user visits the previewed \npage. Attackers needed at least the role \"WebEditor\" in order to exploit this issue.\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)",
  "id": "GHSA-hwcj-2grf-hc24",
  "modified": "2025-07-29T12:31:21Z",
  "published": "2025-07-28T09:31:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27802"
    },
    {
      "type": "WEB",
      "url": "https://api.nuget.optimizely.com/packages/episerver.cms.core/11.21.4#"
    },
    {
      "type": "WEB",
      "url": "https://api.nuget.optimizely.com/packages/episerver.cms.core/12.22.1#"
    },
    {
      "type": "WEB",
      "url": "https://r.sec-consult.com/optimizely"
    },
    {
      "type": "WEB",
      "url": "https://support.optimizely.com/hc/en-us/articles/30886353301645-2025-Optimizely-CMS-11-PaaS-release-notes#h_01K09MR1SZS4FEAPD4478GQ0FR"
    },
    {
      "type": "WEB",
      "url": "https://support.optimizely.com/hc/en-us/articles/37757063222029-2024-Optimizely-CMS-12-PaaS-release-notes#h_01JN4AZV48WKNADH3KWC2GYDS5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-27802 (GCVE-0-2025-27802)

Vulnerability from cvelistv5

Published

2025-07-28 08:47

Modified

2025-07-29 09:38

Severity ?

4.8 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:L/SC:L/SI:L/SA:N
4.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

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. RTE properties (text fields), which could be used in the "Edit" section of the CMS, allowed the input of arbitrary text. It was possible to input malicious JavaScript code in these properties that would be executed if a user visits the previewed page. Attackers needed at least the role "WebEditor" in order to exploit this issue. 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

▼	URL	Tags
	https://api.nuget.optimizely.com/packages/episerver.cms.core/11.21.4#	patch
	https://api.nuget.optimizely.com/packages/episerver.cms.core/12.22.1#	patch
	https://r.sec-consult.com/optimizely	third-party-advisory

Impacted products

	Vendor	Product	Version
	Optimizely	Episerver Content Management System (CMS)	Version: 11.x < 11.21.4 Version: 12.x < 12.22.1

Show details on NVD website

JSON

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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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