MEDIUM CVSS 5.3
Published: 2026-06-01

CVE-2026-49328

apache fesod Security Advisory (CVE-2026-49328)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-49328 impacting apache fesod. Evaluated with CVSS Base Score of 5.3 (MEDIUM).

Original NVD Description

Source: NIST NVD
Server-Side Request Forgery (SSRF) in the UrlImageConverter component of Apache Fesod (Incubating) fesod-sheet before 2.0.2-incubating allows attackers to cause outbound network requests to internal or otherwise restricted resources via a user-supplied image URL. Users are recommended to upgrade to version 2.0.2-incubating, which fixes this issue.

📊 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
Low (C:L)
Partial information leakage
Integrity
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product apache / fesod
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-2026-49328 impacting apache fesod.

⚡ Nuclei Detection Template (YAML) cve-2026-49328.yaml
id: cve-2026-49328

info:
  name: apache fesod - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2026-49328 affecting apache fesod.
    Evaluation: Server-Side Request Forgery (SSRF) in the UrlImageConverter component of Apache Fesod (Incubating) fesod-sheet before 2.0.2-incubating allows attacker...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-49328
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2026-49328
    cwe-id: CWE-918
  tags: cve,cve-2026-49328,apache,fesod,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "fesod"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-49328.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-49328
# Target: apache fesod | CVSS: 5.3 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-49328 (apache fesod)...")
    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 apache fesod 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-2026-49328.sh
# Recommended Remediation & Patching Commands for CVE-2026-49328
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install fesod 2>/dev/null || \
sudo dnf upgrade fesod 2>/dev/null || \
sudo yum update fesod

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

# 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-2026-49328 in apache fesod?

Review vendor-specific security notices and update apache fesod 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-2026-49328?

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-2026-49328?

CVE-2026-49328 is classified with a CVSS 3.1 Base Score of 5.3 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
5.3
MEDIUM SEVERITY
CVE ID CVE-2026-49328
Weakness CWE-918
Vendor apache
Product fesod
Published 2026-06-01
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N