CVE-2025-67494Network attack vector

Unauthenticated internal data disclosure via trusted host header

Published Dec 9, 2025 · Updated Dec 10, 2025

Server-side request forgery in affected ZITADEL Login UI V2 releases allows remote attackers to read internal HTTP responses. The service URL resolver accepts x-zitadel-forward-host as a trusted fallback and routes API requests to that attacker-selected host. An internet- or intranet-reachable Login UI V2 is sufficient; returned upstream bodies expose internal-service data and bypass network segmentation.

CVSS severity9.3
Critical
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in affected ZITADEL Login UI V2 releases allows remote attackers to read internal HTTP responses. The service URL resolver accepts x-zitadel-forward-host as a trusted fallback and routes API requests to that attacker-selected host. An internet- or intranet-reachable Login UI V2 is sufficient; returned upstream bodies expose internal-service data and bypass network segmentation.

The record

CVE
CVE-2025-67494
Published
Dec 9, 2025
Updated
Dec 10, 2025
Vendor
ZITADEL
Product
ZITADEL
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.80.0-v2.20.0.20251208091519-4c879b47334e
  2. Affected versionversion=>= 1.83.4, <= 1.87.5
  3. Affected versionversion=>= 4.0.0-rc.1, < 4.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ZITADEL · ZITADELversion=< 1.80.0-v2.20.0.20251208091519-4c879b47334e; version=>= 1.83.4, <= 1.87.5; version=>= 4.0.0-rc.1, < 4.7.1

Published CVSS scores

9.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
8.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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