LOW CVSS 3.3
Published: 2026-05-08

CVE-2026-8124

gpac gpac Security Advisory (CVE-2026-8124)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-8124 impacting gpac gpac. Evaluated with CVSS Base Score of 3.3 (LOW).

Original NVD Description

Source: NIST NVD
A security vulnerability has been detected in GPAC up to 26.02.0. This affects the function sidx_box_read of the file src/isomedia/box_code_base.c. The manipulation leads to allocation of resources. The attack must be carried out locally. The exploit has been disclosed publicly and may be used. The identifier of the patch is 442e2299530138d8f874fd885c565ba98a6318ba. It is suggested to install a patch to address this issue.

📊 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
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product gpac / gpac
Affected Versions *
Weakness Enumeration CWE-400

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-2026-8124 impacting gpac gpac.

⚡ Nuclei Detection Template (YAML) cve-2026-8124.yaml
id: cve-2026-8124

info:
  name: gpac gpac - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: low
  description: |
    Automated signature & scanner for CVE-2026-8124 affecting gpac gpac.
    Evaluation: A security vulnerability has been detected in GPAC up to 26.02.0. This affects the function sidx_box_read of the file src/isomedia/box_code_base.c. Th...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-8124
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
    cvss-score: 3.3
    cve-id: CVE-2026-8124
    cwe-id: CWE-400
  tags: cve,cve-2026-8124,gpac,gpac,low

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "gpac"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-8124.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-8124
# Target: gpac gpac | CVSS: 3.3 (LOW)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-8124 (gpac gpac)...")
    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 gpac gpac 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-2026-8124.sh
# Recommended Remediation & Patching Commands for CVE-2026-8124
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install gpac 2>/dev/null || \
sudo dnf upgrade gpac 2>/dev/null || \
sudo yum update gpac

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

# 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

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-8124 in gpac gpac?

Review vendor-specific security notices and update gpac gpac 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-2026-8124?

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-2026-8124?

CVE-2026-8124 is classified with a CVSS 3.1 Base Score of 3.3 (LOW). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
3.3
LOW SEVERITY
CVE ID CVE-2026-8124
Weakness CWE-400
Vendor gpac
Product gpac
Published 2026-05-08
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L