GHSA-25FQ-6QGG-QPJ8

Vulnerability from github – Published: 2026-02-06 18:34 – Updated: 2026-02-06 21:43
VLAI?
Summary
SCEditor has DOM XSS via emoticon URL/HTML injection
Details

If an attacker has the ability control configuration options passed to sceditor.create(), like emoticons, charset, etc. then it's possible for them to trigger an XSS attack due to lack of sanitisation of configuration options.

Proof of concept:

sceditor.create(textarea, {
  emoticons: {
    dropdown: { ':)': { url: 'x" onerror="window.__xss = true' } }
  }
});
Severity ?
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.2.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "sceditor"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25581"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-06T18:34:30Z",
    "nvd_published_at": "2026-02-06T21:16:17Z",
    "severity": "MODERATE"
  },
  "details": "If an attacker has the ability control configuration options passed to `sceditor.create()`, like `emoticons`, `charset`, etc. then it\u0027s possible for them to trigger an XSS attack due to lack of sanitisation of configuration options.\n\nProof of concept:\n\n```js\nsceditor.create(textarea, {\n  emoticons: {\n    dropdown: { \u0027:)\u0027: { url: \u0027x\" onerror=\"window.__xss = true\u0027 } }\n  }\n});\n```",
  "id": "GHSA-25fq-6qgg-qpj8",
  "modified": "2026-02-06T21:43:37Z",
  "published": "2026-02-06T18:34:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/samclarke/SCEditor/security/advisories/GHSA-25fq-6qgg-qpj8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25581"
    },
    {
      "type": "WEB",
      "url": "https://github.com/samclarke/SCEditor/commit/5733aed4f0e257cb78e1ba191715fc458cbd473d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/samclarke/SCEditor"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "SCEditor has DOM XSS via emoticon URL/HTML injection"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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