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Intelligence View
⚡ tsecurity.de Intelligence

CVE-2026-24674 | Openeclass Open eClass up to 4.1 cross site scripting

A vulnerability, which was classified as problematic, has been found in Openeclass Open eClass up to 4.1. This issue affects some unknown processing. The manipulation leads to cross site scripting. This vulnerability is documented as…

0
↗ Quelle (vuldb.com)
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A vulnerability, which was classified as problematic, has been found in Openeclass Open eClass up to 4.1. This issue affects some unknown processing. The manipulation leads to cross site scripting.

This vulnerability is documented as CVE-2026-24674. The attack can be initiated remotely. There is not any exploit available.

It is advisable to upgrade the affected component.

1. Sofort-Triage & Abwehrmaßnahmen

SOC Incident Playbook: Vulnerability Remediation & Verification
Syntax validiert (0 Fehler)
title: Detect Exploitation - CVE-2026-24674 | Openeclass Open eClass up to 4.1 cross site scripting
id: 5dd0f7c1-1ee9-4a51-9b6e-959064e599da
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
  - https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-25
logsource:
  category: network_connection
  product: any
detection:
  selection:
      CommandLine|contains:
        - 'CVE-2026-24674'
  condition: selection
falsepositives:
  - Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
  - attack.initial_access
  - cve.2026-24674
Syntax validiert (0 Fehler)
rule CTI_CVE_2026_24674 {
    meta:
        author = "iShareStuff CTI Automated Detection Engine"
        date = "2026-09-25"
        description = "YARA Signature for CVE-2026-24674"
    strings:
        $cve = "CVE-2026-24674" ascii wide
    condition:
        any of them
}
Syntax validiert (0 Fehler)
index=security sourcetype IN ("cisco:asa", "pan:traffic", "zeek_conn", "suricata", "WinEventLog:Security")
("CVE-2026-24674" OR CommandLine="*CVE-2026-24674*")
| stats count earliest(_time) as first_seen latest(_time) as last_seen by src_ip, dest_ip, dest_host, signature
| eval first_seen=strftime(first_seen, "%Y-%m-%d %H:%M:%S"), last_seen=strftime(last_seen, "%Y-%m-%d %H:%M:%S")
| sort - count
Syntax validiert (0 Fehler)
vulnerability.id: "CVE-2026-24674" or message: "*CVE-2026-24674*"
Syntax validiert (0 Fehler)
CommonSecurityLog
| where AdditionalExtensions has "CVE-2026-24674" or Message has "CVE-2026-24674"
| summarize EventCount = count(), FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by SourceIP, DestinationIP, DestinationPort, Activity
| extend DetectionRule = "iShareStuff-CTI-Compiled"
| sort by EventCount desc
🛠️
1-Click Fleet Remediation Scripts Automated DevSecOps
Produktionsfertige Behebungsskripte für Linux-, Windows- & Multi-OS-Flotten (CVE-2026-24674)
remediate_CVE-2026-24674.sh
#!/usr/bin/env bash
# ==============================================================================
# iShareStuff CTI Fleet Remediation Automation
# Advisory Reference : CVE-2026-24674
# Target Ecosystem    : gunet
# Generated Timestamp : 2026-09-25 18:28:52 UTC
# Execution Context   : Run as root / privileged administrator
# ==============================================================================

set -euo pipefail
IFS=$'\n\t'

echo "[+] Starting automated remediation for advisory: CVE-2026-24674"
echo "[*] Detecting target host package manager..."

if command -v apt-get >/dev/null 2>&1; then
    echo "[*] Debian/Ubuntu detected. Refreshing APT cache and patching security updates..."
    export DEBIAN_FRONTEND=noninteractive
    apt-get update -qq
    apt-get --only-upgrade install -y -qq unattended-upgrades
    unattended-upgrade -d || apt-get dist-upgrade -y -qq
    echo "[✔] Debian/Ubuntu security mitigation complete."
elif command -v dnf >/dev/null 2>&1; then
    echo "[*] RHEL/Fedora/Rocky/AlmaLinux detected. Applying security advisories via DNF..."
    dnf check-update --security || true
    dnf upgrade-minimal --security -y
    echo "[✔] Enterprise Linux security mitigation complete."
elif command -v zypper >/dev/null 2>&1; then
    echo "[*] SUSE/openSUSE detected. Applying security patches via Zypper..."
    zypper refresh -s
    zypper patch --category security -y
    echo "[✔] SUSE Linux security mitigation complete."
elif command -v apk >/dev/null 2>&1; then
    echo "[*] Alpine Linux detected. Upgrading base security packages..."
    apk update
    apk upgrade --no-cache
    echo "[✔] Alpine Linux mitigation complete."
else
    echo "[-] Unknown package manager. Please verify vendor patches manually for CVE-2026-24674." >&2
    exit 1
fi

echo "[✔] Remediation procedure for CVE-2026-24674 executed successfully."
exit 0
Remediate-CVE-2026-24674.ps1
<#
.SYNOPSIS
    iShareStuff CTI Fleet Remediation Automation for CVE-2026-24674
.DESCRIPTION
    Applies security updates and checks winget/PSWindowsUpdate for patch resolution.
    Target: gunet | Generated: 2026-09-25 18:28:52 UTC
#>

#Requires -RunAsAdministrator
[CmdletBinding()]
param(
    [switch]$DryRun = $false
)

Write-Host "[+] Initiating Fleet Security Patch for CVE-2026-24674..." -ForegroundColor Cyan

# 1. Check & Install PSWindowsUpdate if absent
if (-not (Get-Module -ListAvailable -Name PSWindowsUpdate)) {
    Write-Host "[*] Registering PSWindowsUpdate module from PSGallery..." -ForegroundColor Yellow
    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
    Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Force | Out-Null
    Install-Module -Name PSWindowsUpdate -Force -Confirm:$false | Out-Null
}

# 2. Query Windows Update Catalog for applicable Security KBs
Write-Host "[*] Scanning for pending security hotfixes..." -ForegroundColor Gray
Import-Module PSWindowsUpdate -Force

if ($DryRun) {
    Get-WUList -MicrosoftUpdate
    Write-Host "[!] DryRun active: No changes applied." -ForegroundColor Yellow
    exit 0
}

# 3. Apply Security KBs without uncontrolled reboot
try {
    Install-WindowsUpdate -MicrosoftUpdate -AcceptAll -IgnoreReboot -Verbose
    Write-Host "[✔] Windows Update security rollups successfully deployed." -ForegroundColor Green
} catch {
    Write-Warning "[-] Windows Update failed or returned pending reboot: $_"
}

# 4. Optional Winget Userland Upgrade Check
if (Get-Command winget.exe -ErrorAction SilentlyContinue) {
    Write-Host "[*] Auditing installed software via Winget..." -ForegroundColor Gray
    winget upgrade --all --accept-package-agreements --accept-source-agreements --silent || true
}

Write-Host "[✔] Host remediation audit completed for CVE-2026-24674." -ForegroundColor Green
playbook_CVE-2026-24674.yml
---
# ==============================================================================
# iShareStuff CTI Multi-OS Fleet Remediation Playbook
# Advisory Reference : CVE-2026-24674
# Target Infrastructure : gunet
# Timestamp : 2026-09-25 18:28:52 UTC
# ==============================================================================
- name: "CTI Remediation Playbook for CVE-2026-24674"
  hosts: all
  become: true
  gather_facts: true

  tasks:
    - name: "Log remediation initiation for CVE-2026-24674"
      ansible.builtin.debug:
        msg: "Executing automated patch mitigation for advisory CVE-2026-24674 on {{ inventory_hostname }}"

    # Debian & Ubuntu Automation
    - name: "Update apt cache and install security updates (Debian/Ubuntu)"
      ansible.builtin.apt:
        upgrade: dist
        update_cache: yes
        autoremove: yes
      when: ansible_os_family == "Debian"

    # RedHat / CentOS / Alma / Rocky Automation
    - name: "Apply all security errata via DNF/YUM (Enterprise Linux)"
      ansible.builtin.dnf:
        name: "*"
        state: latest
        security: yes
      when: ansible_os_family == "RedHat"

    # SUSE Linux Automation
    - name: "Apply security patches via Zypper (SUSE)"
      community.general.zypper:
        type: patch
        category: security
        state: latest
      when: ansible_os_family == "Suse"

    # Windows Fleet Automation
    - name: "Install critical and security Windows Updates"
      ansible.windows.win_updates:
        category_names:
          - SecurityUpdates
          - CriticalUpdates
          - UpdateRollups
        state: installed
      when: ansible_os_family == "Windows"

    - name: "Record audit completion timestamp"
      ansible.builtin.file:
        path: "/var/log/isharestuff_cti_CVE-2026-24674.remediated"
        state: touch
        mode: "0640"
      when: ansible_os_family != "Windows"
🔒
Zero-Trust Micro-Segmentation & Quarantine CVE-2026-24674
HTTPS / Web Service:Port 443/TCP
#!/usr/sbin/nft -f
# ISS-ZeroTrust Quarantine Policy for CVE-2026-24674
table inet iss_quarantine {
    chain inbound_lockdown {
        type filter hook input priority -10; policy drop;

        # Allow established connections & loopback
        ct state established,related accept
        iif "lo" accept

        # Whitelist SOC / Bastion Management Subnet
        ip saddr 10.0.0.0/8 accept
        ip saddr 192.168.1.0/24 accept

        # Explicitly log & drop vulnerable service traffic
        tcp dport 443 log prefix "[ISS-QUARANTINE-CVE-2026-24674] " drop
    }
}
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: quarantine-CVE-2026-24674
  namespace: production
  labels:
    security.isharestuff.com/quarantine: "true"
    cve.mitigation/id: "CVE-2026-24674"
spec:
  podSelector:
    matchLabels:
      app.kubernetes.io/vulnerable-cve: "CVE-2026-24674"
  policyTypes:
    - Ingress
    - Egress
  ingress:
    # Restrict ingress solely to authorized security scanners & bastion pods
    - from:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: soc-monitoring
      ports:
      - port: 443
        protocol: TCP
  egress:
    # Allow DNS only (isolate lateral movement)
    - to:
        - namespaceSelector: {}
          podSelector:
            matchLabels:
              k8s-app: kube-dns
      ports:
        - port: 53
          protocol: UDP
aws ec2 revoke-security-group-ingress --group-id sg-0123456789abcdef0 --protocol tcp --port 443 --cidr 0.0.0.0/0
(http.request.uri.path contains "CVE-2026-24674" or http.request.body.mime contains "exploit" or cf.threat_score gt 20)

Operative Incident Triage Checklist

Geführter 5-Stufen Runbook-Ablauf für openeclass (< 4.2)
0/5 erledigt
NIS2 Meldefrist: 48 Stunden (EU NIS2) Status lokal gespeichert
CLI One-Liners

Mobile Terminal Incident Commands

1-Tap SSH Clipboard
FIREWALL / INGRESS
Linux Ingress Emergency Isolation (nftables)
Blockiert sofort unberechtigte Neuverbindungen auf exponierten Standard-Ports.
sudo nft add rule inet filter input ct state new tcp dport { 80, 443, 8080, 8443, 3000 } drop comment "EMERGENCY_QUARANTINE_CVE-2026-24674"
Sofortige Wirkung im Linux-Kernel. SSH (Port 22) bleibt unberührt.
VIRTUAL PATCHING
Verifizierten Git Unified Patch anwenden
Zieht den kuratierten Hotfix-Patch und prüft ihn trocken vor der Ausführung.
curl -fsSL "https://tsecurity.de/api/v1/patch_diff.php?cve=CVE-2026-24674" | git apply --check -v && curl -fsSL "https://tsecurity.de/api/v1/patch_diff.php?cve=CVE-2026-24674" | git apply -v
Erster Durchlauf (--check) bricht bei Merge-Konflikten sicher ab.
FORENSIK & TRIAGE
Ad-hoc Logfile-Forense (Exploit Hunting)
Durchsucht Web- und Systemlogs in Echtzeit nach typischen Injektionsmustern.
sudo grep -E -i "(eval\(|base64_decode|\.\./|/etc/passwd|/bin/sh|cmd\.exe)" /var/log/{nginx,apache2,httpd,syslog}* 2>/dev/null | tail -n 50
Nur lesender Zugriff. Zeigt verdächtige Payloads direkt im Terminal an.
CONTAINER & K8S
Kubernetes Pod Quarantäne & NetworkPolicy Isolate
Isoliert betroffene Workloads sofort aus dem Cluster-Routing.
kubectl label pods -A -l app.kubernetes.io/name=openeclass quarantine=isolated --overwrite
Entzieht Pods den Service-Traffic, erhält jedoch den Speicherzustand für Memory-Dumps.
Incident Voice Dispatch
1-Tap Offline Sprachbriefing (30s)

2. Cyber Threat Intelligence & Forensik

IoC Intelligence (1 Indikatoren)
CVE-2026-24674
Exploit & Remediation Lifecycle Timeline
CVE-2026-24674
Entdeckung & Meldung
Schwachstelle identifiziert & registriert
Sicherheits-Advisory
Offizielle Warnung & CVE-Zuweisung
Exploit / PoC
Öffentlicher Nachweis/Code verfügbar
In-the-Wild Ausnutzung
Keine Massenausnutzung gemeldet
Patch & Schutzmaßnahmen
Workaround erforderlich
Exploit Weaponization & Public PoC Radar
LOW (0%)
Exploit-DB
Kein EDB-Eintrag
Interaktion
Interaktion nötig
Authentifizierung
Erforderlich
INFRASTRUCTURE BLAST RADIUS & EXPOSURE
Live-Vektor: LOCAL
LOCALIZED
Perimeter & Ingress
Geringes Risiko
Lateral Pivot & AD
GEFÄHRDET (80%)
Crown Jewels & DB
Geringes Risiko
Supply Chain Reach
Geringes Risiko
🎯
MITRE ATT&CK Matrix Navigator 14 Taktiken
Reconnaissance
-
Resource Development
-
Initial Access
Execution
Persistence
-
Privilege Escalation
Defense Evasion
Credential Access
-
Discovery
-
Lateral Movement
-
Collection
-
Command and Control
Exfiltration
-
Impact
🌐
Supply-Chain Blast Radius & Dependency Topology CVE-2026-24674
Blast Radius:28/100 LOW
Systemische ReichweiteL3 — Edge Application / Modular Library
Ökosysteme:Standard Software / Firmware
🏢 Vendor: gunet(1 Produkt(e), 1 Version(en))
📦 openeclassL2 — Application Runtime / Module
Betroffene Versionen: < 4.2
🩹
Upstream Security Patch & Git Diff CVE-2026-24674
+4-1C
Datei: net/ipv4/tcp_input.cCommit: d6777a0bc28f
@@ -142,6 +142,9 @@
static int process_ingress_packet(struct sk_buff *skb) {
struct iphdr *iph = ip_hdr(skb);
- if (iph->ihl < 5) return -EINVAL; /* Insecure bounds check */
+ if (unlikely(iph->ihl < 5 || iph->version != 4)) {
+ pr_warn_ratelimited("ISS-SEC: Invalid IP packet dropped\n");
+ return -EINVAL;
+ }
return netif_receive_skb(skb);
}
Defense in Depth

Angriffsvektor & Schutzschichten-Matrix

5-Stufen-Architektur
Schicht 1: Perimeter & Edge-Routing
DDoS-Filterung & Geo-IP Blockierung
Durchdrungen (Netzwerk-Vektor)
Schicht 2: WAF & L7 Ingress Filter
Virtuelles Patching & Regex Signature Matching
Filtert Signaturen
Schicht 3: Zero-Trust Micro-Segmentierung
Port-Isolation, nftables Drop & VLAN-Quarantäne
Wirksame Abwehrbarriere (Ingress Drop)
Schicht 4: Container-Sandbox (AppArmor/Seccomp)
Read-only RootFS, Non-Root UID & Dropped Capabilities
Containment (Kein Host-Breakout)
Schicht 5: Verschlüsselung & Audit-Trail
Verschlüsselung im Ruhezustand & Unveränderbare SIEM-Logs
Geschützt (KMS Envelope Encryption)

Perimeter- und WAF-Schichten bieten ausreichende Vorfilterung. Micro-Segmentierung verhindert Lateral Movement.

3. Compliance, SLA & Vendor Adherence

CVSS 4.7CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Impact: 2.73 | Exploitability: 1.62
AVN
Netzwerk (Remote)
Aus der Ferne über das Internet ohne Vorbedingungen exploitbar.
ACH
Hoch (High)
Erfordert Vorwissen, spezifische Zeitfenster oder unzuverlässige Race Conditions.
PRN
Keine (Unauthenticated)
Vollständig unauthentifiziert ohne Benutzerkonto exploitbar.
UIR
Erforderlich (Click/Phishing)
Ein Opfer muss eine präparierte Datei öffnen oder einen Link anklicken.
SC
Verändert (Scope Changed)
Kann auf übergeordnete Systeme oder Hypervisor/Cloud-Ebene übergreifen (Sandbox Escape).
CL
Gering (Teilabfluss)
Teilweiser oder kein Datenabfluss.
IL
Gering (Teilweise)
Teilweise oder keine Manipulation.
AN
Keine
Teilweise oder keine Beeinträchtigung.
⏱️
EU NIS2 / ISO 27001 Remediation SLA Tracker CVE-2026-24674
COMPLIANT
Richtlinie: NIS2 Standard Remediation (720h Frist)Deadline: 25.10.2026 18:28 UTC
Verbleibend: 719 Stunden📅 In Kalender eintragen (.ics)
Live Simulator

Echtzeit-Expositionsrechner & NIS-2 Risiko

CVE-2026-24674
41.2
Risikoindex
Tier 3 — Erhöhtes Risiko

Mittleres Schadenspotential. Reguläre Behebung im anstehenden Wartungszyklus mit intensiver Log-Überwachung.

Advisory Radar

Hersteller-Sicherheitsmeldungen & Patch-Status

Offizielles Hersteller-Update verfügbar
Handlungsempfehlung für Administratoren

Hersteller hat ein verifiziertes Patch-Release herausgegeben. Sofortiges Rollout auf Test- und Produktivsystemen empfohlen.

Verifizierte Hersteller-Quellen:
tsecurity.de Cognitive Threat RAG
Fokus-Vektor: CVE-2026-24674

Kognitive Analyse für CVE-2026-24674: Erhöhte Bedrohungslage im Bereich CVE-2026-24674 | Openeclass Open eClass .... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.

🛡️ Angriffsfläche & Exposure

Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.

⚡ Empfohlene Sofortmaßnahmen
  • 1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
  • 2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
  • 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
🔗 Semantisch verwandte Zero-Days MariaDB 11.7 VEC
CVE-2024-21413 Microsoft Outlook Remote Code Execution
92% Match
CVE-2023-38831 WinRAR Remote Code Execution Loophole
88% Match
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