MEDIUM CVSS 5.3
Published: 2026-03-30

CVE-2026-5170

mongodb mongodb Security Advisory (CVE-2026-5170)
โ†— Official NIST NVD Record
Seeking technical exploit breakdowns or verified PoC code for CVE-2026-5170?
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-5170 impacting mongodb mongodb. Evaluated with CVSS Base Score of 5.3 (MEDIUM).

Original NVD Description

Source: NIST NVD
A user with access to the cluster with a limited set of privilege actions can trigger a crash of aย mongod process during the limited and unpredictable window when the cluster is being promoted from a replica set to a sharded cluster. This may cause a denial of service by taking down the primary of the replica set. This issue affects MongoDB Server v8.2 versions prior to 8.2.2, MongoDB Server v8.0 versions between 8.0.18, MongoDB Server v7.0 versions between 7.0.31.

๐Ÿ“Š CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
High (AC:H)
Depends on race conditions or environment
Privileges Required
Low (PR:L)
Standard user access required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact
Availability
High (A:H)
Total denial of service or shutdown

๐ŸŽฏ Affected Versions Matrix

Affected Product mongodb / mongodb
Affected Versions *
Weakness Enumeration CWE-617

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-2026-5170 impacting mongodb mongodb.

โšก Nuclei Detection Template (YAML) cve-2026-5170.yaml
id: cve-2026-5170

info:
  name: mongodb mongodb - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2026-5170 affecting mongodb mongodb.
    Evaluation: A user with access to the cluster with a limited set of privilege actions can trigger a crash of aย mongod process during the limited and unpredictable...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-5170
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
    cvss-score: 5.3
    cve-id: CVE-2026-5170
    cwe-id: CWE-617
  tags: cve,cve-2026-5170,mongodb,mongodb,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "mongodb"
        part: body
๐Ÿ PoC Exploit & Verification Probe (Python 3) poc_cve-2026-5170.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-5170
# Target: mongodb mongodb | CVSS: 5.3 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-5170 (mongodb mongodb)...")
    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 mongodb mongodb 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)
๐Ÿ›ก๏ธ Quick Patch & Remediation Script (Bash) patch_cve-2026-5170.sh
# Recommended Remediation & Patching Commands for CVE-2026-5170
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install mongodb 2>/dev/null || \
sudo dnf upgrade mongodb 2>/dev/null || \
sudo yum update mongodb

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

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

๐Ÿ›ก๏ธ 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.
โš ๏ธ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

๐Ÿ”— Verified Technical References

Authorities
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Distributions
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โ“ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-5170 in mongodb mongodb?

Review vendor-specific security notices and update mongodb mongodb 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-2026-5170?

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-2026-5170?

CVE-2026-5170 is classified with a CVSS 3.1 Base Score of 5.3 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
5.3
MEDIUM SEVERITY
CVE ID CVE-2026-5170
Weakness CWE-617
Vendor mongodb
Product mongodb
Published 2026-03-30
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H