CVE-2026-68747 (GCVE-0-2026-68747)

Vulnerability from cvelistv5 – Published: 2026-08-06 14:50 – Updated: 2026-08-06 15:43
VLAI
Title
CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input
Summary
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed. Element boundaries are resolved before the scrubber runs, so injected content does not escape the <style> element and no script executes. This issue affects html_sanitize_ex: from 0.3.1 before 1.5.4.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
EEF
References
Impacted products
Vendor Product Version
rrrene html_sanitize_ex Affected: 0.3.1 , < 1.5.4 (semver)
    cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*
 Create a notification for this product.
rrrene html_sanitize_ex Affected: 21f90012eb21aa36f4e3701b7547e12faf0f3c8b , < 0b9f9ad63a7529d4f2c3c1134c371adc3e654308 (git)
    cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Peter Ullrich Jonatan Männchen / EEF René Föhring
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-68747",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-06T15:43:31.189847Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-06T15:43:37.237Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.hex.pm",
          "cpes": [
            "cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.HtmlSanitizeEx.Scrubber.CSS\u0027",
            "\u0027Elixir.HtmlSanitizeEx\u0027"
          ],
          "packageName": "html_sanitize_ex",
          "packageURL": "pkg:hex/html_sanitize_ex",
          "product": "html_sanitize_ex",
          "programFiles": [
            "lib/html_sanitize_ex/scrubber/css.ex",
            "lib/html_sanitize_ex.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.HtmlSanitizeEx.Scrubber.CSS\u0027:scrub/1"
            },
            {
              "name": "\u0027Elixir.HtmlSanitizeEx\u0027:html5/1"
            }
          ],
          "repo": "https://github.com/rrrene/html_sanitize_ex",
          "vendor": "rrrene",
          "versions": [
            {
              "lessThan": "1.5.4",
              "status": "affected",
              "version": "0.3.1",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "\u0027Elixir.HtmlSanitizeEx.Scrubber.CSS\u0027",
            "\u0027Elixir.HtmlSanitizeEx\u0027"
          ],
          "packageName": "rrrene/html_sanitize_ex",
          "packageURL": "pkg:github/rrrene/html_sanitize_ex",
          "product": "html_sanitize_ex",
          "programFiles": [
            "lib/html_sanitize_ex/scrubber/css.ex",
            "lib/html_sanitize_ex.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.HtmlSanitizeEx.Scrubber.CSS\u0027:scrub/1"
            },
            {
              "name": "\u0027Elixir.HtmlSanitizeEx\u0027:html5/1"
            }
          ],
          "repo": "https://github.com/rrrene/html_sanitize_ex",
          "vendor": "rrrene",
          "versions": [
            {
              "lessThan": "0b9f9ad63a7529d4f2c3c1134c371adc3e654308",
              "status": "affected",
              "version": "21f90012eb21aa36f4e3701b7547e12faf0f3c8b",
              "versionType": "git"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eOnly \u003ccode\u003eHtmlSanitizeEx.html5/1\u003c/code\u003e, and custom scrubbers declared with \u003ccode\u003euse HtmlSanitizeEx, extend: :html5\u003c/code\u003e, permit \u003ccode\u003e\u0026lt;style\u0026gt;\u003c/code\u003e elements, and the sanitized output must be rendered to other users. Applications calling \u003ccode\u003eHtmlSanitizeEx.Scrubber.CSS.scrub/1\u003c/code\u003e directly are also affected.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "Only `HtmlSanitizeEx.html5/1`, and custom scrubbers declared with `use HtmlSanitizeEx, extend: :html5`, permit `\u003cstyle\u003e` elements, and the sanitized output must be rendered to other users. Applications calling `HtmlSanitizeEx.Scrubber.CSS.scrub/1` directly are also affected."
            }
          ],
          "value": "Only HtmlSanitizeEx.html5/1, and custom scrubbers declared with use HtmlSanitizeEx, extend: :html5, permit \u003cstyle\u003e elements, and the sanitized output must be rendered to other users. Applications calling HtmlSanitizeEx.Scrubber.CSS.scrub/1 directly are also affected."
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.5.4",
                  "versionStartIncluding": "0.3.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Peter Ullrich"
        },
        {
          "lang": "en",
          "type": "analyst",
          "value": "Jonatan M\u00e4nnchen / EEF"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Ren\u00e9 F\u00f6hring"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eImproper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027) vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. \u003ccode\u003eHtmlSanitizeEx.Scrubber.CSS.scrub/1\u003c/code\u003e applies its property and value allowlist through a \u003ccode\u003eRegex.replace\u003c/code\u003e over substrings matching a \u003ccode\u003eproperty: value\u003c/code\u003e declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. \u003ccode\u003e@import url(//attacker.example/style.css);\u003c/code\u003e survives, while the same URL inside a \u003ccode\u003ebackground: url(...)\u003c/code\u003e declaration is removed.\u003c/p\u003e\n\u003cp\u003eElement boundaries are resolved before the scrubber runs, so injected content does not escape the \u003ccode\u003e\u0026lt;style\u0026gt;\u003c/code\u003e element and no script executes.\u003c/p\u003e\n\u003cp\u003eThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027) vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. `HtmlSanitizeEx.Scrubber.CSS.scrub/1` applies its property and value allowlist through a `Regex.replace` over substrings matching a `property: value` declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. `@import url(//attacker.example/style.css);` survives, while the same URL inside a `background: url(...)` declaration is removed.\n\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the `\u003cstyle\u003e` element and no script executes.\n\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4."
            }
          ],
          "value": "Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027) vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed.\n\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the \u003cstyle\u003e element and no script executes.\n\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-148",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-148 Content Spoofing"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 2.3,
            "baseSeverity": "LOW",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-74",
              "description": "CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-06T15:08:58.171Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "related"
          ],
          "url": "https://github.com/rrrene/html_sanitize_ex/security/advisories/GHSA-87v2-pfhj-r5x7"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-68747.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-68747"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/rrrene/html_sanitize_ex/commit/0b9f9ad63a7529d4f2c3c1134c371adc3e654308"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eSanitize with \u003ccode\u003ebasic_html/1\u003c/code\u003e, \u003ccode\u003emarkdown_html/1\u003c/code\u003e or \u003ccode\u003estrip_tags/1\u003c/code\u003e, none of which allow \u003ccode\u003e\u0026lt;style\u0026gt;\u003c/code\u003e elements, or define a custom scrubber that omits it.\u003c/p\u003e\n\u003cp\u003eA Content-Security-Policy \u003ccode\u003estyle-src\u003c/code\u003e directive that permits no external stylesheet origins stops an injected \u003ccode\u003e@import\u003c/code\u003e from loading, though injected inline rules still apply.\u003c/p\u003e"
            },
            {
              "base64": false,
              "type": "text/markdown",
              "value": "Sanitize with `basic_html/1`, `markdown_html/1` or `strip_tags/1`, none of which allow `\u003cstyle\u003e` elements, or define a custom scrubber that omits it.\n\nA Content-Security-Policy `style-src` directive that permits no external stylesheet origins stops an injected `@import` from loading, though injected inline rules still apply."
            }
          ],
          "value": "Sanitize with basic_html/1, markdown_html/1 or strip_tags/1, none of which allow \u003cstyle\u003e elements, or define a custom scrubber that omits it.\n\nA Content-Security-Policy style-src directive that permits no external stylesheet origins stops an injected @import from loading, though injected inline rules still apply."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-68747",
    "datePublished": "2026-08-06T14:50:03.143Z",
    "dateReserved": "2026-07-31T13:23:00.355Z",
    "dateUpdated": "2026-08-06T15:43:37.237Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-68747",
      "date": "2026-08-08",
      "epss": "0.00434",
      "percentile": "0.35778"
    },
    "vulnrichment": {
      "containers": "{\"cna\": {\"affected\": [{\"collectionURL\": \"https://repo.hex.pm\", \"cpes\": [\"cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*\"], \"defaultStatus\": \"unaffected\", \"modules\": [\"\u0027Elixir.HtmlSanitizeEx.Scrubber.CSS\u0027\", \"\u0027Elixir.HtmlSanitizeEx\u0027\"], \"packageName\": \"html_sanitize_ex\", \"packageURL\": \"pkg:hex/html_sanitize_ex\", \"product\": \"html_sanitize_ex\", \"programFiles\": [\"lib/html_sanitize_ex/scrubber/css.ex\", \"lib/html_sanitize_ex.ex\"], \"programRoutines\": [{\"name\": \"\u0027Elixir.HtmlSanitizeEx.Scrubber.CSS\u0027:scrub/1\"}, {\"name\": \"\u0027Elixir.HtmlSanitizeEx\u0027:html5/1\"}], \"repo\": \"https://github.com/rrrene/html_sanitize_ex\", \"vendor\": \"rrrene\", \"versions\": [{\"lessThan\": \"1.5.4\", \"status\": \"affected\", \"version\": \"0.3.1\", \"versionType\": \"semver\"}]}, {\"collectionURL\": \"https://github.com\", \"cpes\": [\"cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*\"], \"defaultStatus\": \"unaffected\", \"modules\": [\"\u0027Elixir.HtmlSanitizeEx.Scrubber.CSS\u0027\", \"\u0027Elixir.HtmlSanitizeEx\u0027\"], \"packageName\": \"rrrene/html_sanitize_ex\", \"packageURL\": \"pkg:github/rrrene/html_sanitize_ex\", \"product\": \"html_sanitize_ex\", \"programFiles\": [\"lib/html_sanitize_ex/scrubber/css.ex\", \"lib/html_sanitize_ex.ex\"], \"programRoutines\": [{\"name\": \"\u0027Elixir.HtmlSanitizeEx.Scrubber.CSS\u0027:scrub/1\"}, {\"name\": \"\u0027Elixir.HtmlSanitizeEx\u0027:html5/1\"}], \"repo\": \"https://github.com/rrrene/html_sanitize_ex\", \"vendor\": \"rrrene\", \"versions\": [{\"lessThan\": \"0b9f9ad63a7529d4f2c3c1134c371adc3e654308\", \"status\": \"affected\", \"version\": \"21f90012eb21aa36f4e3701b7547e12faf0f3c8b\", \"versionType\": \"git\"}]}], \"configurations\": [{\"lang\": \"en\", \"supportingMedia\": [{\"base64\": false, \"type\": \"text/html\", \"value\": \"\u003cp\u003eOnly \u003ccode\u003eHtmlSanitizeEx.html5/1\u003c/code\u003e, and custom scrubbers declared with \u003ccode\u003euse HtmlSanitizeEx, extend: :html5\u003c/code\u003e, permit \u003ccode\u003e\u0026lt;style\u0026gt;\u003c/code\u003e elements, and the sanitized output must be rendered to other users. Applications calling \u003ccode\u003eHtmlSanitizeEx.Scrubber.CSS.scrub/1\u003c/code\u003e directly are also affected.\u003c/p\u003e\"}, {\"base64\": false, \"type\": \"text/markdown\", \"value\": \"Only `HtmlSanitizeEx.html5/1`, and custom scrubbers declared with `use HtmlSanitizeEx, extend: :html5`, permit `\u003cstyle\u003e` elements, and the sanitized output must be rendered to other users. Applications calling `HtmlSanitizeEx.Scrubber.CSS.scrub/1` directly are also affected.\"}], \"value\": \"Only HtmlSanitizeEx.html5/1, and custom scrubbers declared with use HtmlSanitizeEx, extend: :html5, permit \u003cstyle\u003e elements, and the sanitized output must be rendered to other users. Applications calling HtmlSanitizeEx.Scrubber.CSS.scrub/1 directly are also affected.\"}], \"cpeApplicability\": [{\"nodes\": [{\"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"1.5.4\", \"versionStartIncluding\": \"0.3.1\", \"vulnerable\": true}], \"negate\": false, \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"analyst\", \"value\": \"Jonatan M\\u00e4nnchen / EEF\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Ren\\u00e9 F\\u00f6hring\"}], \"descriptions\": [{\"lang\": \"en\", \"supportingMedia\": [{\"base64\": false, \"type\": \"text/html\", \"value\": \"\u003cp\u003eImproper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027) vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. \u003ccode\u003eHtmlSanitizeEx.Scrubber.CSS.scrub/1\u003c/code\u003e applies its property and value allowlist through a \u003ccode\u003eRegex.replace\u003c/code\u003e over substrings matching a \u003ccode\u003eproperty: value\u003c/code\u003e declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. \u003ccode\u003e@import url(//attacker.example/style.css);\u003c/code\u003e survives, while the same URL inside a \u003ccode\u003ebackground: url(...)\u003c/code\u003e declaration is removed.\u003c/p\u003e\\n\u003cp\u003eElement boundaries are resolved before the scrubber runs, so injected content does not escape the \u003ccode\u003e\u0026lt;style\u0026gt;\u003c/code\u003e element and no script executes.\u003c/p\u003e\\n\u003cp\u003eThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4.\u003c/p\u003e\"}, {\"base64\": false, \"type\": \"text/markdown\", \"value\": \"Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027) vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. `HtmlSanitizeEx.Scrubber.CSS.scrub/1` applies its property and value allowlist through a `Regex.replace` over substrings matching a `property: value` declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. `@import url(//attacker.example/style.css);` survives, while the same URL inside a `background: url(...)` declaration is removed.\\n\\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the `\u003cstyle\u003e` element and no script executes.\\n\\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4.\"}], \"value\": \"Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027) vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed.\\n\\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the \u003cstyle\u003e element and no script executes.\\n\\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.5.4.\"}], \"impacts\": [{\"capecId\": \"CAPEC-148\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-148 Content Spoofing\"}]}], \"metrics\": [{\"cvssV4_0\": {\"Automatable\": \"NOT_DEFINED\", \"Recovery\": \"NOT_DEFINED\", \"Safety\": \"NOT_DEFINED\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"attackVector\": \"NETWORK\", \"baseScore\": 2.3, \"baseSeverity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"providerUrgency\": \"NOT_DEFINED\", \"subAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"LOW\", \"subIntegrityImpact\": \"LOW\", \"userInteraction\": \"PASSIVE\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N\", \"version\": \"4.0\", \"vulnAvailabilityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"format\": \"CVSS\", \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-74\", \"description\": \"CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component (\u0027Injection\u0027)\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-08-06T15:08:58.171Z\"}, \"references\": [{\"tags\": [\"vendor-advisory\", \"related\"], \"url\": \"https://github.com/rrrene/html_sanitize_ex/security/advisories/GHSA-87v2-pfhj-r5x7\"}, {\"tags\": [\"related\"], \"url\": \"https://cna.erlef.org/cves/CVE-2026-68747.html\"}, {\"tags\": [\"related\"], \"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-68747\"}, {\"tags\": [\"patch\"], \"url\": \"https://github.com/rrrene/html_sanitize_ex/commit/0b9f9ad63a7529d4f2c3c1134c371adc3e654308\"}], \"source\": {\"discovery\": \"EXTERNAL\"}, \"title\": \"CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input\", \"workarounds\": [{\"lang\": \"en\", \"supportingMedia\": [{\"base64\": false, \"type\": \"text/html\", \"value\": \"\u003cp\u003eSanitize with \u003ccode\u003ebasic_html/1\u003c/code\u003e, \u003ccode\u003emarkdown_html/1\u003c/code\u003e or \u003ccode\u003estrip_tags/1\u003c/code\u003e, none of which allow \u003ccode\u003e\u0026lt;style\u0026gt;\u003c/code\u003e elements, or define a custom scrubber that omits it.\u003c/p\u003e\\n\u003cp\u003eA Content-Security-Policy \u003ccode\u003estyle-src\u003c/code\u003e directive that permits no external stylesheet origins stops an injected \u003ccode\u003e@import\u003c/code\u003e from loading, though injected inline rules still apply.\u003c/p\u003e\"}, {\"base64\": false, \"type\": \"text/markdown\", \"value\": \"Sanitize with `basic_html/1`, `markdown_html/1` or `strip_tags/1`, none of which allow `\u003cstyle\u003e` elements, or define a custom scrubber that omits it.\\n\\nA Content-Security-Policy `style-src` directive that permits no external stylesheet origins stops an injected `@import` from loading, though injected inline rules still apply.\"}], \"value\": \"Sanitize with basic_html/1, markdown_html/1 or strip_tags/1, none of which allow \u003cstyle\u003e elements, or define a custom scrubber that omits it.\\n\\nA Content-Security-Policy style-src directive that permits no external stylesheet origins stops an injected @import from loading, though injected inline rules still apply.\"}]}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-68747\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-06T15:43:31.189847Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-06T15:43:34.159Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-68747\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"EEF\", \"dateReserved\": \"2026-07-31T13:23:00.355Z\", \"datePublished\": \"2026-08-06T14:50:03.143Z\", \"dateUpdated\": \"2026-08-06T15:43:37.237Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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.