CVE-2026-46496

HAX CMS: Stored XSS via '<video-player>' component allows arbitrary JavaScript execution and token theft

State: Published
Severity: 9.3 Critical
Published: Jun 5, 2026
Updated: Jun 5, 2026
Reserved: May 14, 2026

Description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 26.0.0 due to improper sanitization of the `<video-player>` component. The component allows `javascript:` URIs in the `source` attribute, which are executed when the page is viewed. This enables attackers to execute arbitrary JavaScript in the context of the victim’s browser and access sensitive data such as JWT tokens and more. Version 26.0.0 fixes the issue.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-116 Improper Encoding or Escaping of Output

Affected Products

Product	Versions
haxcms-nodejshaxtheweb	< 26.0.0Affected
video-playerhaxtheweb	< 26.0.0Affected

References

https://github.com/haxtheweb/issues/security/advisories/GHSA-2m6p-hm3w-6jm3

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