HIGH CVSS 7.8
Published: 2026-05-13

CVE-2026-0237

paloaltonetworks prisma_browser Security Advisory (CVE-2026-0237)
โ†— Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-0237 impacting paloaltonetworks prisma_browser. Evaluated with CVSS Base Score of 7.8 (HIGH).

Original NVD Description

Source: NIST NVD
An improper protection of alternate path vulnerability in Palo Alto Networks Prismaยฎ Browser on macOS fails to properly restrict access to an internal automation bridge. This allows a locally authenticated non-admin user to leverage an exposed communication channel to send unauthorized commands to the browser, bypassing security controls.

๐Ÿ“Š CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
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
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

๐ŸŽฏ Affected Versions Matrix

Affected Product paloaltonetworks / prisma_browser
Affected Versions *
Weakness Enumeration CWE-424

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-2026-0237 impacting paloaltonetworks prisma_browser.

โšก Nuclei Detection Template (YAML) cve-2026-0237.yaml
id: cve-2026-0237

info:
  name: paloaltonetworks prisma_browser - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2026-0237 affecting paloaltonetworks prisma_browser.
    Evaluation: An improper protection of alternate path vulnerability in Palo Alto Networks Prismaยฎ Browser on macOS fails to properly restrict access to an internal...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-0237
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 7.8
    cve-id: CVE-2026-0237
    cwe-id: CWE-424
  tags: cve,cve-2026-0237,paloaltonetworks,prisma_browser,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "prisma_browser"
        part: body
๐Ÿ PoC Exploit & Verification Probe (Python 3) poc_cve-2026-0237.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-0237
# Target: paloaltonetworks prisma_browser | CVSS: 7.8 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-0237 (paloaltonetworks prisma_browser)...")
    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 paloaltonetworks prisma_browser 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-2026-0237.sh
# Recommended Remediation & Patching Commands for CVE-2026-0237
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install prisma_browser 2>/dev/null || \
sudo dnf upgrade prisma_browser 2>/dev/null || \
sudo yum update prisma_browser

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

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

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

How do I fix CVE-2026-0237 in paloaltonetworks prisma_browser?

Review vendor-specific security notices and update paloaltonetworks prisma_browser 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-2026-0237?

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-2026-0237?

CVE-2026-0237 is classified with a CVSS 3.1 Base Score of 7.8 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.8
HIGH SEVERITY
CVE ID CVE-2026-0237
Weakness CWE-424
Vendor paloaltonetworks
Product prisma_browser
Published 2026-05-13
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H