HIGH CVSS 8.0
Published: 2026-05-29

CVE-2026-49367

jetbrains intellij_idea Security Advisory (CVE-2026-49367)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-49367 impacting jetbrains intellij_idea. Evaluated with CVSS Base Score of 8.0 (HIGH).

Original NVD Description

Source: NIST NVD
In JetBrains IntelliJ IDEA before 2026.1.1 command execution was possible via the guest user account

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
Low (PR:L)
Standard user access required
User Interaction
Required (UI:R)
User must click or open resource
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product jetbrains / intellij_idea
Affected Versions *
Weakness Enumeration CWE-862

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2026-49367 impacting jetbrains intellij_idea.

⚡ Nuclei Detection Template (YAML) cve-2026-49367.yaml
id: cve-2026-49367

info:
  name: jetbrains intellij_idea - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2026-49367 affecting jetbrains intellij_idea.
    Evaluation: In JetBrains IntelliJ IDEA before 2026.1.1 command execution was possible via the guest user account...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-49367
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
    cvss-score: 8.0
    cve-id: CVE-2026-49367
    cwe-id: CWE-862
  tags: cve,cve-2026-49367,jetbrains,intellij_idea,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "intellij_idea"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-49367.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-49367
# Target: jetbrains intellij_idea | CVSS: 8.0 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-49367 (jetbrains intellij_idea)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against jetbrains intellij_idea scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2026-49367.sh
# Recommended Remediation & Patching Commands for CVE-2026-49367
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install intellij_idea 2>/dev/null || \
sudo dnf upgrade intellij_idea 2>/dev/null || \
sudo yum update intellij_idea

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i intellij_idea 2>/dev/null || rpm -qa | grep -i intellij_idea

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-49367 in jetbrains intellij_idea?

Review vendor-specific security notices and update jetbrains intellij_idea packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2026-49367?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2026-49367?

CVE-2026-49367 is classified with a CVSS 3.1 Base Score of 8.0 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
8.0
HIGH SEVERITY
CVE ID CVE-2026-49367
Weakness CWE-862
Vendor jetbrains
Product intellij_idea
Published 2026-05-29
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H