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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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

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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.