CVE-2026-46496CWE-116CWE-79

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

Critical · published June 5, 2026

CVSS v4.0
9.3
EPSS
0%
Percentile
31.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
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
EPSS
0.00390 · 31.9th percentile
Weaknesses
CWE-116 · Improper Encoding or Escaping of Output; CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-06-05T18:46Z
EPSS history
Timeline
  • 05 JUN 18:46Z
    HAX CMS: Stored XSS via '<video-player>' component allows arbitrary JavaScript execution and token theft
    cvelistv5