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Q1What is this vulnerability? (Essence + Consequences)
๐จ **Essence**: Mesop allows **unrestricted code injection** via the `/exec-py` endpoint.โฆ
๐ก๏ธ **Root Cause**: **CWE-94** (Code Injection). <br>๐ **Flaw**: The `ai/testing` module's `/exec-py` endpoint **unconditionally executes** unverified Python code without any input validation or sanitization.
Q3Who is affected? (Versions/Components)
๐ฆ **Affected**: **Mesop** (by mesop-dev). <br>๐ **Versions**: **1.2.2 and earlier**. <br>โ ๏ธ **Component**: Specifically the `ai/testing` module endpoint.
Q4What can hackers do? (Privileges/Data)
๐ **Privileges**: Full **Remote Code Execution (RCE)**. <br>๐ **Data Impact**: Attackers can access, modify, or delete any data accessible to the Python process.โฆ
๐ **Threshold**: **LOW**. <br>๐ซ **Auth**: **No authentication required** (PR:N). <br>๐ **Access**: Requires only **HTTP access** to the server. <br>๐ฏ **Complexity**: Low (AC:L).
Q6Is there a public Exp? (PoC/Wild Exploitation)
๐ฃ **Public Exploit**: **YES**. <br>๐ **PoC**: Available via **Nuclei Templates** (projectdiscovery). <br>โก **Status**: Exploitation is straightforward using base64-encoded Python code injection.
Q7How to self-check? (Features/Scanning)
๐ **Self-Check**: Scan for the `/exec-py` endpoint in the `ai/testing` module. <br>๐ก **Tooling**: Use **Nuclei** with the specific CVE-2026-33057 template to detect vulnerable instances.โฆ
๐ ๏ธ **Fixed**: **YES**. <br>๐ **Patch**: Refer to the official GitHub commit `825f559` and the security advisory **GHSA-gjgx-rvqr-6w6v**. <br>โ **Action**: Upgrade to a version newer than 1.2.2 immediately.
Q9What if no patch? (Workaround)
๐ง **No Patch?**: **Block external access** to the `/exec-py` endpoint via firewall rules. <br>๐ **Mitigation**: Disable the `ai/testing` module if not strictly needed for development.โฆ
๐ฅ **Urgency**: **CRITICAL**. <br>๐ **CVSS**: **9.8** (High). <br>โฑ๏ธ **Priority**: **Immediate Action Required**. <br>๐ **Reason**: Unauthenticated RCE with public PoCs makes this a high-priority target for attackers.