Is CVE-2026-55692 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-55692 being exploited in the wild.

How severe is CVE-2026-55692?

High severity, with a CVSS score of 7.5, published 15 September 2026.

Which products and versions are affected?

starcitizenwiki/embedvideo (Packagist) <= 4.0.0, ECOSYSTEM:introduced=0,fixed=4.1.0; StarCitizenWiki EmbedVideo <= 4.0.0.

Is there a fix for CVE-2026-55692?

Yes. starcitizenwiki/embedvideo (Packagist): upgrade to 4.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-55692 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-55692?

Check whether you run starcitizenwiki/embedvideo (Packagist) or StarCitizenWiki EmbedVideo at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-55692: StarCitizenWiki EmbedVideo stored XSS in EmbedHtmlFormatter

Q: Is there a fix for CVE-2026-55692?

Yes. starcitizenwiki/embedvideo (Packagist): upgrade to 4.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-55692 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-55692?

Check whether you run starcitizenwiki/embedvideo (Packagist) or StarCitizenWiki EmbedVideo at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-55692 · Severity: high · CVSS 7.5 · Published 2026-09-15

The EmbedVideo extension for MediaWiki, which allows users to embed videos from various services into wiki pages, contains a security flaw in its consent management feature. When the video consent requirement is enabled, an attacker with page-editing permissions can craft a malicious video link that injects unauthorized code into the page. This code automatically runs in the browser of any visitor who views the page, potentially allowing the attacker to steal sensitive information or perform actions on behalf of other users.

Technologies: starcitizenwiki/embedvideo (Packagist), StarCitizenWiki EmbedVideo. Vendors: Packagist, StarCitizenWiki.

Quick answers

Is CVE-2026-55692 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-55692 being exploited in the wild.
How severe is CVE-2026-55692?: High severity, with a CVSS score of 7.5, published 15 September 2026.
Which products and versions are affected?: starcitizenwiki/embedvideo (Packagist) <= 4.0.0, ECOSYSTEM:introduced=0,fixed=4.1.0; StarCitizenWiki EmbedVideo <= 4.0.0.
Is there a fix for CVE-2026-55692?: Yes. starcitizenwiki/embedvideo (Packagist): upgrade to 4.1.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-55692 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-55692?: Check whether you run starcitizenwiki/embedvideo (Packagist) or StarCitizenWiki EmbedVideo at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

starcitizenwiki/embedvideo (Packagist): upgrade to 4.1.0 or later
```
composer require starcitizenwiki/embedvideo:^4.1.0
```

Technical details

A stored cross-site scripting (XSS) vulnerability exists in the StarCitizenWiki EmbedVideo extension for MediaWiki when '$wgEmbedVideoRequireConsent' is enabled. The vulnerability is located in 'EmbedHtmlFormatter.php', where video configurations are JSON-encoded and placed into the 'data-mw-iframeconfig' attribute using 'sprintf' without adequate escaping. Specifically, the regex patterns for services like 'archiveorg', 'wistia', and 'sharepoint' fail to filter single quotes, allowing an attacker to terminate the attribute and inject arbitrary HTML event handlers (e.g., 'onmouseover' or 'autofocus'). This results in stored XSS that executes in the wiki's origin for every visitor. The issue is fixed in version 4.1.0 by migrating to mustache templates for proper output escaping.

Affected products

StarCitizenWiki EmbedVideo <= 4.0.0

Identifiers

CVE-2026-55692
GHSA-5c7p-g73q-rpg5

Timeline

2026-06-19: advisory: GitHub Advisory GHSA-5c7p-g73q-rpg5 published
2026-06-19: patched: Version 4.1.0 released

References

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