CRITICAL CVSS 9.3
Published: 2026-02-03

CVE-2026-25150

qwik qwik Security Advisory (CVE-2026-25150)
↗ Official NIST NVD Record
Seeking technical exploit breakdowns or verified PoC code for CVE-2026-25150?
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-25150 impacting qwik qwik. Evaluated with CVSS Base Score of 9.3 (CRITICAL).

Original NVD Description

Source: NIST NVD
Qwik is a performance focused javascript framework. Prior to version 1.19.0, a prototype pollution vulnerability exists in the formToObj() function within @builder.io/qwik-city middleware. The function processes form field names with dot notation (e.g., user.name) to create nested objects, but fails to sanitize dangerous property names like __proto__, constructor, and prototype. This allows unauthenticated attackers to pollute Object.prototype by sending crafted HTTP POST requests, potentially leading to privilege escalation, authentication bypass, or denial of service. This issue has been patched in version 1.19.0.

📊 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
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
High (I:H)
Total modification of target system
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product qwik / qwik
Affected Versions *
Weakness Enumeration CWE-1321

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-2026-25150 impacting qwik qwik.

⚡ Nuclei Detection Template (YAML) cve-2026-25150.yaml
id: cve-2026-25150

info:
  name: qwik qwik - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2026-25150 affecting qwik qwik.
    Evaluation: Qwik is a performance focused javascript framework. Prior to version 1.19.0, a prototype pollution vulnerability exists in the formToObj() function wi...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-25150
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L
    cvss-score: 9.3
    cve-id: CVE-2026-25150
    cwe-id: CWE-1321
  tags: cve,cve-2026-25150,qwik,qwik,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "qwik"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-25150.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-25150
# Target: qwik qwik | CVSS: 9.3 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-25150 (qwik qwik)...")
    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 qwik qwik 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-2026-25150.sh
# Recommended Remediation & Patching Commands for CVE-2026-25150
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install qwik 2>/dev/null || \
sudo dnf upgrade qwik 2>/dev/null || \
sudo yum update qwik

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

# 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
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Distributions
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❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-25150 in qwik qwik?

Review vendor-specific security notices and update qwik qwik 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-2026-25150?

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-2026-25150?

CVE-2026-25150 is classified with a CVSS 3.1 Base Score of 9.3 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.3
CRITICAL SEVERITY
CVE ID CVE-2026-25150
Weakness CWE-1321
Vendor qwik
Product qwik
Published 2026-02-03
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L