CVE-2025-27507 — AI Deep Analysis Summary

🚨 **Essence**: ZITADEL suffers from **Insecure Direct Object References (IDOR)**.…

🛡️ **Root Cause**: **CWE-639** (Insecure Direct Object Reference). The flaw lies in how the application validates object access, allowing users to manipulate IDs to access other users' data.

👥 **Affected**: **ZITADEL** (Open Source IAM). Specifically, versions prior to the fix released in March 2025. It impacts the core authentication and authorization logic.

💀 **Attacker Capabilities**: With valid credentials, hackers can **read/modify** other users' data (High Impact on Confidentiality/Integrity). They can escalate privileges or access sensitive tenant information.

⚖️ **Exploitation Threshold**: **Medium**. CVSS indicates **PR:H** (Privileges Required). You need a valid account to exploit this, but **AC:L** (Low Complexity) makes it easy to execute once logged in.

🔍 **Public Exploit**: **No**. The `pocs` field is empty. No public Proof-of-Concept or wild exploitation scripts are currently available. It relies on manual ID manipulation.

🔎 **Self-Check**: Review API calls for **IDOR patterns**. Check if user IDs are predictable or if the backend validates ownership of the referenced object against the authenticated user's session.

✅ **Fixed**: **Yes**. A patch was published on **2025-03-04**. Refer to the GitHub Security Advisory (GHSA-f3gh-529w-v32x) and commit `d9d8339` for the official fix.

🚧 **No Patch Workaround**: Implement strict **server-side authorization checks**. Ensure every API request validates that the requester owns the requested resource ID. Use indirect references if possible.

🔥 **Urgency**: **High**. CVSS Score is **High** (C:H, I:H). Even though auth is required, the impact on data integrity and confidentiality is severe. **Patch immediately** upon upgrading.