A vulnerability has been found in Authlib up to 1.6.8 and classified as critical. This impacts an unknown function. The manipulation leads to improper verification of cryptographic signature.
This vulnerability is referenced as CVE-2026-27962. Remote exploitation of the attack is possible. No exploit is available.
The affected component should be upgraded.
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CVE-2026-27962 | Authlib up to 1.6.8 signature verification (Nessus ID 302533)
A vulnerability has been found in Authlib up to 1.6.8 and classified as critical. This impacts an unknown function. The manipulation leads to improper verification of cryptographic signature. This vulnerability is referenced as…
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IoC Intelligence (1 Indikatoren)
CVE-2026-27962
IR-PLAYBOOK-VULN-REMEDIATIONMEDIUM
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title: Detect Exploitation - CVE-2026-27962 | Authlib up to 1.6.8 signature verification (Nessus ID 302533)
id: 3181b336-7571-49cd-8f33-47d4c42f80a8
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-2026-27962 | Authlib up to" 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-2026-27962 | Authlib up to 1.6.8 sig.... 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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