{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.3.1"
              },
              {
                "fixed": "1.5.4"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "088f92b18a4a3911a862b527d5eb3713f9abac24"
            },
            {
              "fixed": "de5cc8085029dae9136af47a9c4712152d8a76f0"
            },
            {
              "fixed": "0b9f9ad63a7529d4f2c3c1134c371adc3e654308"
            }
          ],
          "repo": "https://github.com/rrrene/html_sanitize_ex",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-87v2-pfhj-r5x7"
  ],
  "database_specific": {
    "cna_assigner": "EEF",
    "cwe_ids": [
      "CWE-74"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68747.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "21f90012eb21aa36f4e3701b7547e12faf0f3c8b"
          },
          {
            "fixed": "0b9f9ad63a7529d4f2c3c1134c371adc3e654308"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "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.\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.",
  "id": "CVE-2026-68747",
  "modified": "2026-08-09T03:30:31.130121195Z",
  "published": "2026-08-06T14:50:03.143Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2026-68747.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2026-68747"
    },
    {
      "type": "WEB",
      "url": "https://repo.hex.pm"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68747.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/rrrene/html_sanitize_ex/security/advisories/GHSA-87v2-pfhj-r5x7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68747"
    },
    {
      "type": "FIX",
      "url": "https://github.com/rrrene/html_sanitize_ex/commit/0b9f9ad63a7529d4f2c3c1134c371adc3e654308"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rrrene/html_sanitize_ex"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input"
}