A vulnerability was found in jpadilla pyjwt up to 2.12.x. It has been classified as critical. This issue affects some unknown processing of the component JSON Web Token Handler. Performing a manipulation results in improper authentication.
This vulnerability is reported as CVE-2026-48526. The attack is possible to be carried out remotely. No exploit exists.
Upgrading the affected component is recommended.
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CVE-2026-48526 | jpadilla pyjwt up to 2.12.x JSON Web Token improper authentication (GHSA-xgmm-8j9v-c9wx / WID-SEC-2026-1923)
A vulnerability was found in jpadilla pyjwt up to 2.12.x. It has been classified as critical. This issue affects some unknown processing of the component JSON Web Token Handler. Performing a manipulation results in improper…
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IoC Intelligence (1 Indikatoren)
CVE-2026-48526
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title: Detect Exploitation - CVE-2026-48526 | jpadilla pyjwt up to 2.12.x JSON Web Token improper authentication (GHSA-xgmm-8j9v-c9wx / WID-SEC-2026-1923)
id: c1836352-3260-4a49-8573-72cc0c909bf3
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-2026-48526 | jpadilla pyjw" 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-2026-48526 | jpadilla pyjwt up to 2..... 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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