MEDIUM CVSS 6.5
Published: 2026-04-08

CVE-2026-2377

redhat mirror_registry_for_red_hat_openshift Security Advisory (CVE-2026-2377)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-2377 impacting redhat mirror_registry_for_red_hat_openshift. Evaluated with CVSS Base Score of 6.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
A flaw was found in Red Hat Quay and mirror registry for Red Hat OpenShift. The log export feature in these products allows an authenticated user to specify an arbitrary callback URL. A backend process then makes server-side HTTP requests to this provided URL. This vulnerability, known as Server-Side Request Forgery (SSRF), could allow an attacker to send requests from the application's internal network, potentially leading to the disclosure of sensitive information.

📊 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
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product redhat / mirror_registry_for_red_hat_openshift
Affected Versions -
Weakness Enumeration CWE-918

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-2026-2377 impacting redhat mirror_registry_for_red_hat_openshift.

⚡ Nuclei Detection Template (YAML) cve-2026-2377.yaml
id: cve-2026-2377

info:
  name: redhat mirror_registry_for_red_hat_openshift - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2026-2377 affecting redhat mirror_registry_for_red_hat_openshift.
    Evaluation: A flaw was found in Red Hat Quay and mirror registry for Red Hat OpenShift. The log export feature in these products allows an authenticated user to s...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-2377
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 6.5
    cve-id: CVE-2026-2377
    cwe-id: CWE-918
  tags: cve,cve-2026-2377,redhat,mirror_registry_for_red_h,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "mirror_registry_for_red_hat_openshift"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-2377.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-2377
# Target: redhat mirror_registry_for_red_hat_openshift | CVSS: 6.5 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-2377 (redhat mirror_registry_for_red_hat_openshift)...")
    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 redhat mirror_registry_for_red_hat_openshift 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-2026-2377.sh
# Recommended Remediation & Patching Commands for CVE-2026-2377
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install mirror_registry_for_red_h 2>/dev/null || \
sudo dnf upgrade mirror_registry_for_red_h 2>/dev/null || \
sudo yum update mirror_registry_for_red_h

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

# 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.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-2377 in redhat mirror_registry_for_red_hat_openshift?

Review vendor-specific security notices and update redhat mirror_registry_for_red_hat_openshift 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-2026-2377?

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-2026-2377?

CVE-2026-2377 is classified with a CVSS 3.1 Base Score of 6.5 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
6.5
MEDIUM SEVERITY
CVE ID CVE-2026-2377
Weakness CWE-918
Vendor redhat
Product mirror_registry_for_red_hat_openshift
Published 2026-04-08
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N