A vulnerability marked as problematic has been reported in gitroomhq postiz-app up to 2.21.5. Impacted is an unknown function. The manipulation leads to cross site scripting.
This vulnerability is uniquely identified as CVE-2026-40487. The attack is possible to be carried out remotely. No exploit exists.
It is suggested to upgrade the affected component.
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CVE-2026-40487 | gitroomhq postiz-app up to 2.21.5 cross site scripting (GHSA-44wg-r34q-hvfx / EUVD-2026-23634)
A vulnerability marked as problematic has been reported in gitroomhq postiz-app up to 2.21.5. Impacted is an unknown function. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-40487.…
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IoC Intelligence (1 Indikatoren)
CVE-2026-40487
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title: Detect Exploitation - CVE-2026-40487 | gitroomhq postiz-app up to 2.21.5 cross site scripting (GHSA-44wg-r34q-hvfx / EUVD-2026-23634)
id: 1278b5d7-c416-4a1d-80f0-52b762e0d7d0
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "CVE-2026-40487 | gitroomhq pos" ascii wide
condition:
any of them
}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
tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich CVE-2026-40487 | gitroomhq postiz-app up.... 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.
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