CVE-2026-46396 json
HAX CMS has a stored XSS via <iframe> that allows access to sensitive client-side data and account takeover
published 2026-05-19 5 mo ago modified 2026-09-10 1 mo ago also GHSA-jh3h-rpxg-fr36 , EUVD-2026-34891
- cvss
- 9.3
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
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 `<iframe>` elements. The application allows `javascript:` URIs in the `src` attribute, which are executed when a malicious page is viewed. This enables attackers to execute arbitrary JavaScript in the context of the victim’s browser and access sensitive data exposed to client-side scripts. Version 26.0.0 fixes the issue.
Patch / fix
- npm @haxtheweb/haxcms-nodejs 26.0.0
- npm @haxtheweb/video-player 26.0.0
- npm @haxtheweb/iframe-loader 26.0.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/haxtheweb/issues/security/advisories/GHSA-jh3h-rpxg-fr36 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 4.0 | 9.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @haxtheweb/haxcms-nodejs | <26.0.0 |
26.0.0 |
| npm | @haxtheweb/video-player | <26.0.0 |
26.0.0 |
| npm | @haxtheweb/iframe-loader | <26.0.0 |
26.0.0 |
Affected products
- haxtheweb haxcms-nodejs
- haxtheweb video-player
- haxtheweb iframe-loader
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
Sources
- CVE List CVE-2026-46396
- GitHub Advisory GHSA-jh3h-rpxg-fr36
- NVD CVE-2026-46396
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