CVE-2024-27307 — AI Deep Analysis Summary

Q: Who is affected? (Versions/Components)

📦 **Affected**: `jsonata-js` / `jsonata` library. 📅 **Versions**: 1.4.0 up to (but not including) 2.0.4. ⚠️ **Scope**: Any app using these versions for JSON querying/transformation.

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

🔓 **Privileges**: Full Remote Code Execution (RCE). 📂 **Data**: Complete system compromise. 🚫 **DoS**: Can crash the application. 🌐 **Network**: Exploitable over the network (AV:N).

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

🔓 **Threshold**: LOW. 🚫 **Auth**: None required (PR:N). 👁️ **UI**: No user interaction needed (UI:N). 🎯 **Complexity**: Low (AC:L). Easy to exploit remotely.

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

🕵️ **Public Exploit**: No specific PoC code provided in data. 🔍 **Status**: Confirmed vulnerability (GHSA advisory). 🚩 **Risk**: High potential for wild exploitation due to low barrier to entry.

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

🔍 **Check**: Scan for `jsonata` dependency version. 📊 **Tool**: Use SAST/DAST tools detecting prototype pollution. 📝 **Code**: Look for untrusted JSONata expressions passed to `jsonata()` function.

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

✅ **Fixed**: Yes. 📦 **Patch**: Upgrade to **v2.0.4** or later. 🔗 **Source**: GitHub Release v2.0.4 & Security Advisory GHSA-fqg8-vfv7-8fj8.

Q: What if no patch? (Workaround)

🛑 **Workaround**: If unpatchable, **disable** JSONata processing for untrusted input. 🚫 **Sanitize**: Strictly validate/whitelist all expression inputs. 🧱 **Isolate**: Run in sandboxed environment if possible.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL. 🚨 **Priority**: P1. 🏃 **Action**: Patch immediately. CVSS 9.8 + Remote + No Auth = Immediate threat. 📢 **Alert**: Notify dev teams NOW.

Updated May 08, 2026 CVSS 9.8 · 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**: JSONata (v1.4.0 - 2.0.4) has a critical flaw. Malicious expressions can overwrite object constructors & prototypes.…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: CWE-1321: Improper Variable/Prototype Manipulation. The transformation operator allows attackers to hijack core JavaScript objects.…

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Q3Who is affected? (Versions/Components)

📦 **Affected**: `jsonata-js` / `jsonata` library. 📅 **Versions**: 1.4.0 up to (but not including) 2.0.4. ⚠️ **Scope**: Any app using these versions for JSON querying/transformation.

Q4What can hackers do? (Privileges/Data)

🔓 **Privileges**: Full Remote Code Execution (RCE). 📂 **Data**: Complete system compromise. 🚫 **DoS**: Can crash the application. 🌐 **Network**: Exploitable over the network (AV:N).

Q5Is exploitation threshold high? (Auth/Config)

🔓 **Threshold**: LOW. 🚫 **Auth**: None required (PR:N). 👁️ **UI**: No user interaction needed (UI:N). 🎯 **Complexity**: Low (AC:L). Easy to exploit remotely.

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

🕵️ **Public Exploit**: No specific PoC code provided in data. 🔍 **Status**: Confirmed vulnerability (GHSA advisory). 🚩 **Risk**: High potential for wild exploitation due to low barrier to entry.

Q7How to self-check? (Features/Scanning)

🔍 **Check**: Scan for `jsonata` dependency version. 📊 **Tool**: Use SAST/DAST tools detecting prototype pollution. 📝 **Code**: Look for untrusted JSONata expressions passed to `jsonata()` function.

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. 📦 **Patch**: Upgrade to **v2.0.4** or later. 🔗 **Source**: GitHub Release v2.0.4 & Security Advisory GHSA-fqg8-vfv7-8fj8.

Q9What if no patch? (Workaround)

🛑 **Workaround**: If unpatchable, **disable** JSONata processing for untrusted input. 🚫 **Sanitize**: Strictly validate/whitelist all expression inputs. 🧱 **Isolate**: Run in sandboxed environment if possible.

Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: CRITICAL. 🚨 **Priority**: P1. 🏃 **Action**: Patch immediately. CVSS 9.8 + Remote + No Auth = Immediate threat. 📢 **Alert**: Notify dev teams NOW.

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Vulnerability detail Full AI analysis (login) jsonata-js CWE-1321