CVE-2026-55690

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Source
https://cve.org/CVERecord?id=CVE-2026-55690
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55690.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55690
Aliases
Published
2026-09-15T16:34:08Z
Modified
2026-09-16T11:30:56Z
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
EmbedVideo Extension: Stored XSS via unsanitized service name in exception text
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, EmbedServiceFactory::newFromName in includes/EmbedService/EmbedServiceFactory.php interpolates an attacker-controlled unknown service name into exception text, and includes/EmbedVideo.php returns that text as HTML through the isHtml output path without neutralization. Both the #ev parser function and the evl parser form can reach this error path. A user able to edit a wiki page can inject stored HTML or JavaScript into the error output, causing code to execute in the wiki origin for visitors who render the page. This issue is fixed in version 4.1.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55690.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/cve-osv-conversion/osv-output/CVE-2026-55690.json"