CRITICAL CVSS 9.1
Published: 2026-02-19

CVE-2025-55853

softvision webpdf Security Advisory (CVE-2025-55853)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-55853 impacting softvision webpdf. Evaluated with CVSS Base Score of 9.1 (CRITICAL).

Original NVD Description

Source: NIST NVD
SoftVision webPDF before 10.0.2 is vulnerable to Server-Side Request Forgery (SSRF). The PDF converter function does not check if internal or external resources are requested in the uploaded files and allows for protocols such as http:// and file:///. This allows an attacker to upload an XML or HTML file in the application, which when rendered to a PDF allows for internal port scanning and Local File Inclusion (LFI).

📊 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
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
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product softvision / webpdf
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-2025-55853 impacting softvision webpdf.

⚡ Nuclei Detection Template (YAML) cve-2025-55853.yaml
id: cve-2025-55853

info:
  name: softvision webpdf - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2025-55853 affecting softvision webpdf.
    Evaluation: SoftVision webPDF before 10.0.2 is vulnerable to Server-Side Request Forgery (SSRF). The PDF converter function does not check if internal or external...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-55853
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    cvss-score: 9.1
    cve-id: CVE-2025-55853
    cwe-id: CWE-918
  tags: cve,cve-2025-55853,softvision,webpdf,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "webpdf"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-55853.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-55853
# Target: softvision webpdf | CVSS: 9.1 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-55853 (softvision webpdf)...")
    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 softvision webpdf 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-2025-55853.sh
# Recommended Remediation & Patching Commands for CVE-2025-55853
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install webpdf 2>/dev/null || \
sudo dnf upgrade webpdf 2>/dev/null || \
sudo yum update webpdf

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

# 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-2025-55853 in softvision webpdf?

Review vendor-specific security notices and update softvision webpdf 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-2025-55853?

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-2025-55853?

CVE-2025-55853 is classified with a CVSS 3.1 Base Score of 9.1 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.1
CRITICAL SEVERITY
CVE ID CVE-2025-55853
Weakness CWE-918
Vendor softvision
Product webpdf
Published 2026-02-19
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N