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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Essence**: SandboxJS < 0.8.29 has a critical flaw where function return values aren't properly wrapped.…
🛡️ **Root Cause**: **CWE-74** (Improper Neutralization of Special Elements). The core flaw is the **unwrapped function return value**, which fails to contain malicious payloads within the safe environment.
Q3Who is affected? (Versions/Components)
👥 **Affected**: Users of **SandboxJS** by developer **nyariv**. Specifically, all versions **prior to 0.8.29** are vulnerable. 📦 Product: SandboxJS.
Q4What can hackers do? (Privileges/Data)
💀 **Attacker Capabilities**: Hackers can execute **arbitrary code** on the host system. With **CVSS High** severity (C:H, I:H, A:H), they can steal data, modify systems, and cause full denial of service.…
⚡ **Exploitation Threshold**: **LOW**. The CVSS vector `AV:N/AC:L/PR:N/UI:N` means it is **Network-accessible**, **Low Complexity**, requires **No Privileges**, and **No User Interaction**. It’s a remote, easy exploit. 🎯
Q6Is there a public Exp? (PoC/Wild Exploitation)
🔍 **Public Exploit**: The provided data lists **no specific PoC scripts** (`pocs: []`). However, the vulnerability is confirmed via GitHub Advisory.…
🔎 **Self-Check**: Scan your environment for **SandboxJS** installations. Check the version number. If it is **< 0.8.29**, you are vulnerable. Look for the specific function return handling flaw in the source code. 🧐
Q8Is it fixed officially? (Patch/Mitigation)
✅ **Official Fix**: **YES**. The vulnerability is fixed in **version 0.8.29** and later. The fix is documented in the GitHub commit `67cb186` and the GHSA advisory. 🛠️ Action: Upgrade immediately.
Q9What if no patch? (Workaround)
🚧 **No Patch Workaround**: If you cannot upgrade, **disable network access** to the service if possible. Implement strict **input validation** and **output encoding** for any function returns.…
🔥 **Urgency**: **CRITICAL**. With a **CVSS 3.1** score indicating High impact and Low exploitation difficulty, this requires **immediate patching**. Do not delay. 🚨 Priority: **P0**.