CVE-2026-30957 — AI Deep Analysis Summary

Q: What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: OneUptime < 10.0.21 has a critical flaw in **Synthetic Monitors**. Untrusted code execution is mishandled. 💥 **Consequences**: Leads to **Remote Code Execution (RCE)**. Total system compromise possible.

Q: Who is affected? (Versions/Components)

🏢 **Affected**: **OneUptime** (Open Source Monitoring Solution). 📉 **Version**: All versions **before 10.0.21**. 📦 **Component**: Synthetic Monitors feature.

Q: What can hackers do? (Privileges/Data)

💀 **Hackers Can**: Execute arbitrary code remotely. 📂 **Access**: Full control over the server. 🔓 **Privileges**: High impact on Confidentiality, Integrity, and Availability (CVSS H:H:H).

Q: Is exploitation threshold high? (Auth/Config)

🔑 **Threshold**: Medium. 🛡️ **Auth Required**: **Yes** (PR:L - Privileges Required: Low). 🖱️ **UI Interaction**: None (UI:N). ⚡ **Complexity**: Low (AC:L). Attacker needs low-level access but no user interaction.

Q: Is there a public Exp? (PoC/Wild Exploitation)

🚫 **Public Exploit**: **No**. The `pocs` list is empty in the data. 🌐 **Wild Exploitation**: Not currently reported. 📝 **Status**: Advisory published, but no PoC code available yet.

Q: How to self-check? (Features/Scanning)

🔍 **Self-Check**: Check your OneUptime version. 📊 **Feature**: Look at **Synthetic Monitors** configuration. 🛠️ **Scan**: Verify if version < 10.0.21. If yes, you are vulnerable.

Q: Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: **Yes**. 📦 **Patch**: Upgrade to **OneUptime 10.0.21** or later. 🔗 **Source**: Official GitHub Release & Security Advisory (GHSA-jw8q-gjvg-8w4q).

Q: What if no patch? (Workaround)

🚧 **No Patch?**: Isolate the Synthetic Monitors service. 🚫 **Restrict Access**: Limit network access to low-privilege users only. 🛑 **Disable**: Temporarily disable Synthetic Monitors if possible until patched.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. 📅 **Published**: 2026-03-10. ⚖️ **CVSS**: 9.8 (Critical). 🚀 **Action**: Patch immediately. RCE risk is severe even with low-privilege access.

Updated May 06, 2026 CVSS 10.0 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: OneUptime < 10.0.21 has a critical flaw in **Synthetic Monitors**. Untrusted code execution is mishandled. 💥 **Consequences**: Leads to **Remote Code Execution (RCE)**. Total system compromise possible.

Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **CWE-749** (Exposed Dangerous Method or Function). The vulnerability stems from improper handling of untrusted code within the Synthetic Monitors module.…

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Q3Who is affected? (Versions/Components)

🏢 **Affected**: **OneUptime** (Open Source Monitoring Solution). 📉 **Version**: All versions **before 10.0.21**. 📦 **Component**: Synthetic Monitors feature.

Q4What can hackers do? (Privileges/Data)

💀 **Hackers Can**: Execute arbitrary code remotely. 📂 **Access**: Full control over the server. 🔓 **Privileges**: High impact on Confidentiality, Integrity, and Availability (CVSS H:H:H).

Q5Is exploitation threshold high? (Auth/Config)

🔑 **Threshold**: Medium. 🛡️ **Auth Required**: **Yes** (PR:L - Privileges Required: Low). 🖱️ **UI Interaction**: None (UI:N). ⚡ **Complexity**: Low (AC:L). Attacker needs low-level access but no user interaction.

Q6Is there a public Exp? (PoC/Wild Exploitation)

🚫 **Public Exploit**: **No**. The `pocs` list is empty in the data. 🌐 **Wild Exploitation**: Not currently reported. 📝 **Status**: Advisory published, but no PoC code available yet.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: Check your OneUptime version. 📊 **Feature**: Look at **Synthetic Monitors** configuration. 🛠️ **Scan**: Verify if version < 10.0.21. If yes, you are vulnerable.

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: **Yes**. 📦 **Patch**: Upgrade to **OneUptime 10.0.21** or later. 🔗 **Source**: Official GitHub Release & Security Advisory (GHSA-jw8q-gjvg-8w4q).

Q9What if no patch? (Workaround)

🚧 **No Patch?**: Isolate the Synthetic Monitors service. 🚫 **Restrict Access**: Limit network access to low-privilege users only. 🛑 **Disable**: Temporarily disable Synthetic Monitors if possible until patched.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. 📅 **Published**: 2026-03-10. ⚖️ **CVSS**: 9.8 (Critical). 🚀 **Action**: Patch immediately. RCE risk is severe even with low-privilege access.

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Vulnerability detail Full AI analysis (login) OneUptime CWE-749