CVE-2026-57440

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Source
https://cve.org/CVERecord?id=CVE-2026-57440
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-57440.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-57440
Aliases
Published
2026-09-24T18:42:45Z
Modified
2026-09-25T03:46:32Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Mediawiki EmbedVideo Extension has stored XSS via malformed src url with $wgEmbedVideoRequireConsent disabled
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79",
        "CWE-80"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57440.json"
}
References

Affected packages

Git / github.com/starcitizenwiki/mediawiki-extensions-embedvideo

Affected ranges

Type
GIT
Repo
https://github.com/starcitizenwiki/mediawiki-extensions-embedvideo
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
6982ef6e10a8327a6ecc97eb036f4eb531a6f830
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.1.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

2.*
2.7.2
v1.*
v1.0
v2.*
v2.0
v2.0beta1
v2.0beta2
v2.0beta3
v2.1
v2.1.2
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v2.1.7
v2.1.8
v2.1alpha1
v2.2.0
v2.2.1
v2.2.2
v2.2.3
v2.2.4
v2.2.5
v2.2.6
v2.2.7
v2.2.8
v2.2.9
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.4.0
v2.4.1
v2.5.0
v2.5.2
v2.6.0
v2.6.1
v2.7.0
v2.7.1
v2.7.2
v2.7.3
v2.7.4
v2.8.0
v2.9.0
v3.*
v3.0.0
v3.1.0
v4.*
v4.0.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-57440.json"