HIGH CVSS 8.5
Published: 2026-04-13

CVE-2026-5936

foxit pdf_services_api Security Advisory (CVE-2026-5936)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-5936 impacting foxit pdf_services_api. Evaluated with CVSS Base Score of 8.5 (HIGH).

Original NVD Description

Source: NIST NVD
An attacker can control a server-side HTTP request by supplying a crafted URL, causing the server to initiate requests to arbitrary destinations. This behavior may be exploited to probe internal network services, access otherwise unreachable endpoints (e.g., cloud metadata services), or bypass network access controls, potentially leading to sensitive information disclosure and further compromise of the internal environment.

📊 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
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
High (C:H)
Total information disclosure
Integrity
Low (I:L)
Partial data modification possible
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product foxit / pdf_services_api
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-2026-5936 impacting foxit pdf_services_api.

⚡ Nuclei Detection Template (YAML) cve-2026-5936.yaml
id: cve-2026-5936

info:
  name: foxit pdf_services_api - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2026-5936 affecting foxit pdf_services_api.
    Evaluation: An attacker can control a server-side HTTP request by supplying a crafted URL, causing the server to initiate requests to arbitrary destinations. This...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-5936
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
    cvss-score: 8.5
    cve-id: CVE-2026-5936
    cwe-id: CWE-918
  tags: cve,cve-2026-5936,foxit,pdf_services_api,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "pdf_services_api"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-5936.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-5936
# Target: foxit pdf_services_api | CVSS: 8.5 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-5936 (foxit pdf_services_api)...")
    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 foxit pdf_services_api 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-2026-5936.sh
# Recommended Remediation & Patching Commands for CVE-2026-5936
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install pdf_services_api 2>/dev/null || \
sudo dnf upgrade pdf_services_api 2>/dev/null || \
sudo yum update pdf_services_api

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

# 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
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-5936 in foxit pdf_services_api?

Review vendor-specific security notices and update foxit pdf_services_api 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-2026-5936?

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-2026-5936?

CVE-2026-5936 is classified with a CVSS 3.1 Base Score of 8.5 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
8.5
HIGH SEVERITY
CVE ID CVE-2026-5936
Weakness CWE-918
Vendor foxit
Product pdf_services_api
Published 2026-04-13
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N