GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2022-23519 (GCVE-0-2022-23519)

Vulnerability from cvelistv5 – Published: 2022-12-14 16:50 – Updated: 2025-11-03 21:46
VLAI
Title
Possible XSS vulnerability with certain configurations of rails-html-sanitizer
Summary
rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags in either of the following ways: allow both "math" and "style" elements, or allow both "svg" and "style" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include "math" or "svg" and "style" should either upgrade or use the following workaround immediately: Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version CPE status
rails rails-html-sanitizer Affected: < 1.4.4
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T21:46:00.596Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h"
          },
          {
            "name": "https://hackerone.com/reports/1656627",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/reports/1656627"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "rails-html-sanitizer",
          "vendor": "rails",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer\u0027s allowed tags in either of the following ways: allow both \"math\" and \"style\" elements,  or allow both \"svg\" and \"style\" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include \"math\" or \"svg\" and \"style\" should either upgrade or use the following workaround immediately: Remove \"style\" from the overridden allowed tags, or remove \"math\" and \"svg\" from the overridden allowed tags."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-09-13T16:06:15.408Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h"
        },
        {
          "name": "https://hackerone.com/reports/1656627",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/1656627"
        },
        {
          "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html"
        }
      ],
      "source": {
        "advisory": "GHSA-9h9g-93gc-623h",
        "discovery": "UNKNOWN"
      },
      "title": "Possible XSS vulnerability with certain configurations of rails-html-sanitizer"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-23519",
    "datePublished": "2022-12-14T16:50:14.949Z",
    "dateReserved": "2022-01-19T21:23:53.779Z",
    "dateUpdated": "2025-11-03T21:46:00.596Z",
    "requesterUserId": "c184a3d9-dc98-4c48-a45b-d2d88cf0ac74",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-23519",
      "date": "2026-09-15",
      "epss": "0.00988",
      "percentile": "0.60609"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:rubyonrails:rails_html_sanitizers:*:*:*:*:*:rails:*:*\", \"versionEndExcluding\": \"1.4.4\", \"matchCriteriaId\": \"CC2FBD9D-39C2-4D54-83B6-B3C334623A8D\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer\u0027s allowed tags in either of the following ways: allow both \\\"math\\\" and \\\"style\\\" elements,  or allow both \\\"svg\\\" and \\\"style\\\" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include \\\"math\\\" or \\\"svg\\\" and \\\"style\\\" should either upgrade or use the following workaround immediately: Remove \\\"style\\\" from the overridden allowed tags, or remove \\\"math\\\" and \\\"svg\\\" from the overridden allowed tags.\\n\"}, {\"lang\": \"es\", \"value\": \"rails-html-sanitizer es responsable de sanitizar fragmentos HTML en aplicaciones Rails. Antes de la versi\\u00f3n 1.4.4, una posible vulnerabilidad XSS con ciertas configuraciones de Rails::Html::Sanitizer pod\\u00eda permitir a un atacante inyectar contenido si el desarrollador de la aplicaci\\u00f3n hab\\u00eda anulado las etiquetas permitidas del sanitizador de cualquiera de las siguientes maneras: permitir ambas \\\"math \\\" y \\\"syle\\\", o permitir elementos \\\"svg\\\" y \\\"style\\\". El c\\u00f3digo solo se ve afectado si se anulan las etiquetas permitidas. . Este problema se solucion\\u00f3 en la versi\\u00f3n 1.4.4. Todos los usuarios que anulen las etiquetas permitidas para incluir \\\"math\\\" o \\\"svg\\\" y \\\"style\\\" deben actualizar o utilizar el siguiente workaround inmediatamente: eliminar \\\"style\\\" de las etiquetas permitidas anuladas, o eliminar \\\"math\\\" y \\\"svg\\\" de la etiquetas permitidas anuladas.\"}]",
      "id": "CVE-2022-23519",
      "lastModified": "2024-11-21T06:48:44.103",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N\", \"baseScore\": 7.2, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 2.7}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\", \"baseScore\": 6.1, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"CHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 2.7}]}",
      "published": "2022-12-14T17:15:11.067",
      "references": "[{\"url\": \"https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://hackerone.com/reports/1656627\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://hackerone.com/reports/1656627\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}]",
      "sourceIdentifier": "security-advisories@github.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-79\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-79\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-23519\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2022-12-14T17:15:11.067\",\"lastModified\":\"2026-06-17T04:30:17.187\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer\u0027s allowed tags in either of the following ways: allow both \\\"math\\\" and \\\"style\\\" elements,  or allow both \\\"svg\\\" and \\\"style\\\" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include \\\"math\\\" or \\\"svg\\\" and \\\"style\\\" should either upgrade or use the following workaround immediately: Remove \\\"style\\\" from the overridden allowed tags, or remove \\\"math\\\" and \\\"svg\\\" from the overridden allowed tags.\"},{\"lang\":\"es\",\"value\":\"rails-html-sanitizer es responsable de sanitizar fragmentos HTML en aplicaciones Rails. Antes de la versi\u00f3n 1.4.4, una posible vulnerabilidad XSS con ciertas configuraciones de Rails::Html::Sanitizer pod\u00eda permitir a un atacante inyectar contenido si el desarrollador de la aplicaci\u00f3n hab\u00eda anulado las etiquetas permitidas del sanitizador de cualquiera de las siguientes maneras: permitir ambas \\\"math \\\" y \\\"syle\\\", o permitir elementos \\\"svg\\\" y \\\"style\\\". El c\u00f3digo solo se ve afectado si se anulan las etiquetas permitidas. . Este problema se solucion\u00f3 en la versi\u00f3n 1.4.4. Todos los usuarios que anulen las etiquetas permitidas para incluir \\\"math\\\" o \\\"svg\\\" y \\\"style\\\" deben actualizar o utilizar el siguiente workaround inmediatamente: eliminar \\\"style\\\" de las etiquetas permitidas anuladas, o eliminar \\\"math\\\" y \\\"svg\\\" de la etiquetas permitidas anuladas.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"rails\",\"product\":\"rails-html-sanitizer\",\"versions\":[{\"version\":\"\u003c 1.4.4\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N\",\"baseScore\":7.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":2.7},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\",\"baseScore\":6.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":2.7}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:rubyonrails:rails_html_sanitizers:*:*:*:*:*:rails:*:*\",\"versionEndExcluding\":\"1.4.4\",\"matchCriteriaId\":\"CC2FBD9D-39C2-4D54-83B6-B3C334623A8D\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://hackerone.com/reports/1656627\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://hackerone.com/reports/1656627\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-04-01T13:14:19+00:00",
      "cve": "CVE-2022-23519",
      "id": "CVE-2022-23519",
      "initial_release_date": "2022-12-13T00:00:00+00:00",
      "product_status:fixed": "2",
      "product_status:known_affected": "6",
      "product_status:known_not_affected": "1971",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "rubygem-rails-html-sanitizer: Cross site scripting vulnerability with certain configurations",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-23519.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-08T00:18:32Z",
      "cve": "CVE-2022-23519",
      "id": "CVE-2022-23519",
      "initial_release_date": "2023-02-15T03:28:16Z",
      "product_status:known_affected": "394",
      "product_status:recommended": "24",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-23519",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-23519.json",
      "version": "36"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.