CVE-2026-57440 (GCVE-0-2026-57440)

Vulnerability from cvelistv5 – Published: 2026-09-24 18:42 – Updated: 2026-09-24 18:42
VLAI
Title
Mediawiki EmbedVideo Extension has stored XSS via malformed src url with $wgEmbedVideoRequireConsent disabled
Summary
The EmbedVideo Extension is a MediaWiki extension which adds a parser function called #ev and various parser tags for embedding video clips from various video sharing services. Prior to 4.1.0, with $wgEmbedVideoRequireConsent disabled (not the default), the urls for videos are passed into an iframe src attribute without sanitization. When given a malformed url or id, the src attribute can be escaped via double quotes, allowing for html/javascript injection. Version 4.1.0 contains a patch.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-80 - Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Assigner
References
Impacted products
Vendor Product Version CPE status
StarCitizenWiki mediawiki-extensions-EmbedVideo Affected: < 4.1.0
guessed Create a notification for this product.
Show details on NVD website
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        }
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              "type": "CWE"
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          ]
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        {
          "descriptions": [
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      "providerMetadata": {
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      "source": {
        "advisory": "GHSA-v65j-hff3-753c",
        "discovery": "UNKNOWN"
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      "title": "Mediawiki EmbedVideo Extension has stored XSS via malformed src url with $wgEmbedVideoRequireConsent disabled"
    }
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    "datePublished": "2026-09-24T18:42:45.326Z",
    "dateReserved": "2026-06-24T13:21:20.729Z",
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    "state": "PUBLISHED"
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          }
        ],
        "id": "CVE-2026-57440",
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        "metrics": {
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    }
  }
}



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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.

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