GHSA-J3MM-WMFM-MWVH

Vulnerability from github – Published: 2025-02-20 20:16 – Updated: 2025-02-20 22:53
VLAI?
Summary
Cross-site scripting (XSS) in the CKEditor 5 real-time collaboration package
Details

Impact

During a recent internal audit, we identified a Cross-Site Scripting (XSS) vulnerability in the CKEditor 5 real-time collaboration package. This vulnerability can lead to unauthorized JavaScript code execution and affects user markers, which represent users' positions within the document.

This vulnerability affects only installations with Real-time collaborative editing enabled.

Patches

The problem has been recognized and patched. The fix will be available in version 44.2.1 (and above).

For more information

Email us at security@cksource.com if you have any questions or comments about this advisory.

Severity ?
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 44.2.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@ckeditor/ckeditor5-real-time-collaboration"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "41.3.0"
            },
            {
              "fixed": "44.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 44.2.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "ckeditor5-premium-features"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "42.0.0"
            },
            {
              "fixed": "44.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-25299"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-80"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-02-20T20:16:31Z",
    "nvd_published_at": "2025-02-20T20:15:46Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nDuring a recent internal audit, we identified a Cross-Site Scripting (XSS) vulnerability in the CKEditor 5 real-time collaboration package. This vulnerability can lead to unauthorized JavaScript code execution and affects user markers, which represent users\u0027 positions within the document.\n\nThis vulnerability affects only installations with [Real-time collaborative editing](https://ckeditor.com/docs/ckeditor5/latest/features/collaboration/real-time-collaboration/real-time-collaboration.html) enabled.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 44.2.1 (and above).\n\n### For more information\nEmail us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.",
  "id": "GHSA-j3mm-wmfm-mwvh",
  "modified": "2025-02-20T22:53:45Z",
  "published": "2025-02-20T20:16:31Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-j3mm-wmfm-mwvh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-25299"
    },
    {
      "type": "WEB",
      "url": "https://ckeditor.com/docs/ckeditor5/latest/features/collaboration/real-time-collaboration/real-time-collaboration.html"
    },
    {
      "type": "WEB",
      "url": "https://ckeditor.com/docs/ckeditor5/latest/features/collaboration/real-time-collaboration/real-time-collaboration.html?docId=ee1dca024c9b4e44aef039f99ebe6c664"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ckeditor/ckeditor5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v44.2.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Cross-site scripting (XSS) in the CKEditor 5 real-time collaboration package"
}


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Sightings

Author Source Type Date

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.