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CVE-2026-68750 Quadratic sibling re-flattening in the html_sanitize_ex traversal engine allows CPU-exhaustion denial of service

🗓️ 06 Aug 2026 14:50:20Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Quadratic CPU and memory exhaustion in html_sanitize_ex traversal causes DoS via many siblings.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-68750
6 Aug 202614:50
attackerkb
cve
CVE
CVE-2026-68750
6 Aug 202614:50
cve
euvd
EUVD
EUVD-2026-54085
6 Aug 202614:50
euvd
nvd
NVD
CVE-2026-68750
6 Aug 202616:16
nvd
osv
OSV
EEF-CVE-2026-68750 Quadratic sibling re-flattening in the html_sanitize_ex traversal engine allows CPU-exhaustion denial of service
6 Aug 202614:50
osv
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.HtmlSanitizeEx.Traverser'",
      "'Elixir.HtmlSanitizeEx'"
    ],
    "packageName": "html_sanitize_ex",
    "packageURL": "pkg:hex/html_sanitize_ex",
    "product": "html_sanitize_ex",
    "programFiles": [
      "lib/html_sanitize_ex/traverser.ex",
      "lib/html_sanitize_ex.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.HtmlSanitizeEx.Traverser':traverse/2"
      },
      {
        "name": "'Elixir.HtmlSanitizeEx':basic_html/1"
      },
      {
        "name": "'Elixir.HtmlSanitizeEx':html5/1"
      },
      {
        "name": "'Elixir.HtmlSanitizeEx':markdown_html/1"
      },
      {
        "name": "'Elixir.HtmlSanitizeEx':strip_tags/1"
      }
    ],
    "repo": "https://github.com/rrrene/html_sanitize_ex",
    "vendor": "rrrene",
    "versions": [
      {
        "lessThan": "1.5.3",
        "status": "affected",
        "version": "0.3.1",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:rrrene:html_sanitize_ex:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.HtmlSanitizeEx.Traverser'",
      "'Elixir.HtmlSanitizeEx'"
    ],
    "packageName": "rrrene/html_sanitize_ex",
    "packageURL": "pkg:github/rrrene/html_sanitize_ex",
    "product": "html_sanitize_ex",
    "programFiles": [
      "lib/html_sanitize_ex/traverser.ex",
      "lib/html_sanitize_ex.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.HtmlSanitizeEx.Traverser':traverse/2"
      },
      {
        "name": "'Elixir.HtmlSanitizeEx':basic_html/1"
      },
      {
        "name": "'Elixir.HtmlSanitizeEx':html5/1"
      },
      {
        "name": "'Elixir.HtmlSanitizeEx':markdown_html/1"
      },
      {
        "name": "'Elixir.HtmlSanitizeEx':strip_tags/1"
      }
    ],
    "repo": "https://github.com/rrrene/html_sanitize_ex",
    "vendor": "rrrene",
    "versions": [
      {
        "lessThan": "9f5ccedbed230930813f992a1e6906fcf485981e",
        "status": "affected",
        "version": "69ea11d61525c470b39b6860d024770d5573ff1f",
        "versionType": "git"
      }
    ]
  }
]

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