cvelist/2020/26xxx/CVE-2020-26293.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-26293",
        "STATE": "PUBLIC",
        "TITLE": "Possible XSS bypass if style tag is allowed"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "HtmlSanitizer",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 5.0.372"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "mganss"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS attacks. In HtmlSanitizer before version 5.0.372, there is a possible XSS bypass if style tag is allowed. If you have explicitly allowed the `<style>` tag, an attacker could craft HTML that includes script after passing through the sanitizer. The default settings disallow the `<style>` tag so there is no risk if you have not explicitly allowed the `<style>` tag. The problem has been fixed in version 5.0.372."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:H/A:N",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-8j9v-h2vp-2hhv",
                "refsource": "CONFIRM",
                "url": "https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-8j9v-h2vp-2hhv"
            },
            {
                "name": "https://www.nuget.org/packages/HtmlSanitizer/",
                "refsource": "MISC",
                "url": "https://www.nuget.org/packages/HtmlSanitizer/"
            },
            {
                "name": "https://github.com/mganss/HtmlSanitizer/releases/tag/v5.0.372",
                "refsource": "MISC",
                "url": "https://github.com/mganss/HtmlSanitizer/releases/tag/v5.0.372"
            },
            {
                "name": "https://github.com/mganss/HtmlSanitizer/commit/a3a7602a44d4155d51ec0fbbedc2a49e9c7e2eb8",
                "refsource": "MISC",
                "url": "https://github.com/mganss/HtmlSanitizer/commit/a3a7602a44d4155d51ec0fbbedc2a49e9c7e2eb8"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-8j9v-h2vp-2hhv",
        "discovery": "UNKNOWN"
    }
}